diff --git a/.gitignore b/.gitignore
index ec39dbe6..13842994 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ config/config.ini
 demos/*.dem*
 logs/*
 .idea/
+node_modules
diff --git a/yarn.lock b/yarn.lock
new file mode 100644
index 00000000..9a668c41
--- /dev/null
+++ b/yarn.lock
@@ -0,0 +1,302 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+accepts@1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.3.tgz#c3ca7434938648c3e0d9c1e328dd68b622c284ca"
+  dependencies:
+    mime-types "~2.1.11"
+    negotiator "0.6.1"
+
+after@0.8.1:
+  version "0.8.1"
+  resolved "https://registry.yarnpkg.com/after/-/after-0.8.1.tgz#ab5d4fb883f596816d3515f8f791c0af486dd627"
+
+archiver@0.4.x:
+  version "0.4.10"
+  resolved "https://registry.yarnpkg.com/archiver/-/archiver-0.4.10.tgz#df0feac8f1d1295e5eceb3a205559072d21f4747"
+  dependencies:
+    iconv-lite "~0.2.11"
+    readable-stream "~1.0.2"
+
+arraybuffer.slice@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz#f33b2159f0532a3f3107a272c0ccfbd1ad2979ca"
+
+backo2@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
+
+base64-arraybuffer@0.1.5:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
+
+base64id@0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/base64id/-/base64id-0.1.0.tgz#02ce0fdeee0cef4f40080e1e73e834f0b1bfce3f"
+
+better-assert@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/better-assert/-/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
+  dependencies:
+    callsite "1.0.0"
+
+blob@0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.4.tgz#bcf13052ca54463f30f9fc7e95b9a47630a94921"
+
+callsite@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
+
+component-bind@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
+
+component-emitter@1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.1.2.tgz#296594f2753daa63996d2af08d15a95116c9aec3"
+
+component-emitter@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+
+component-inherit@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
+
+cookie@0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
+
+core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+
+debug@2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
+  dependencies:
+    ms "0.7.1"
+
+debug@2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.3.3.tgz#40c453e67e6e13c901ddec317af8986cda9eff8c"
+  dependencies:
+    ms "0.7.2"
+
+engine.io-client@1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-1.8.1.tgz#71237e9bbce04862675d4d6bfbef351c8b6a35a3"
+  dependencies:
+    component-emitter "1.2.1"
+    component-inherit "0.0.3"
+    debug "2.3.3"
+    engine.io-parser "1.3.1"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parsejson "0.0.3"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    ws "1.1.1"
+    xmlhttprequest-ssl "1.5.3"
+    yeast "0.1.2"
+
+engine.io-parser@1.3.1:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-1.3.1.tgz#9554f1ae33107d6fbd170ca5466d2f833f6a07cf"
+  dependencies:
+    after "0.8.1"
+    arraybuffer.slice "0.0.6"
+    base64-arraybuffer "0.1.5"
+    blob "0.0.4"
+    has-binary "0.1.6"
+    wtf-8 "1.0.0"
+
+engine.io@1.8.1:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-1.8.1.tgz#20066ea903304f13ee37f10faaff6b4784f64373"
+  dependencies:
+    accepts "1.3.3"
+    base64id "0.1.0"
+    cookie "0.3.1"
+    debug "2.3.3"
+    engine.io-parser "1.3.1"
+    ws "1.1.1"
+
+formidable@1.0.x:
+  version "1.0.17"
+  resolved "https://registry.yarnpkg.com/formidable/-/formidable-1.0.17.tgz#ef5491490f9433b705faa77249c99029ae348559"
+
+has-binary@0.1.6:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/has-binary/-/has-binary-0.1.6.tgz#25326f39cfa4f616ad8787894e3af2cfbc7b6e10"
+  dependencies:
+    isarray "0.0.1"
+
+has-binary@0.1.7:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/has-binary/-/has-binary-0.1.7.tgz#68e61eb16210c9545a0a5cce06a873912fe1e68c"
+  dependencies:
+    isarray "0.0.1"
+
+has-cors@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/has-cors/-/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
+
+iconv-lite@~0.2.11:
+  version "0.2.11"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.2.11.tgz#1ce60a3a57864a292d1321ff4609ca4bb965adc8"
+
+indexof@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/indexof/-/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
+
+inherits@~2.0.1:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+isarray@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
+
+json3@3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.2.tgz#3c0434743df93e2f5c42aee7b19bcb483575f4e1"
+
+mime-db@~1.25.0:
+  version "1.25.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.25.0.tgz#c18dbd7c73a5dbf6f44a024dc0d165a1e7b1c392"
+
+mime-types@~2.1.11:
+  version "2.1.13"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.13.tgz#e07aaa9c6c6b9a7ca3012c69003ad25a39e92a88"
+  dependencies:
+    mime-db "~1.25.0"
+
+ms@0.7.1:
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"
+
+ms@0.7.2:
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.2.tgz#ae25cf2512b3885a1d95d7f037868d8431124765"
+
+negotiator@0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.1.tgz#2b327184e8992101177b28563fb5e7102acd0ca9"
+
+object-assign@4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.0.tgz#7a3b3d0e98063d43f4c03f2e8ae6cd51a86883a0"
+
+object-component@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
+
+options@>=0.0.5:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
+
+parsejson@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/parsejson/-/parsejson-0.0.3.tgz#ab7e3759f209ece99437973f7d0f1f64ae0e64ab"
+  dependencies:
+    better-assert "~1.0.0"
+
+parseqs@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.5.tgz#d5208a3738e46766e291ba2ea173684921a8b89d"
+  dependencies:
+    better-assert "~1.0.0"
+
+parseuri@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
+  dependencies:
+    better-assert "~1.0.0"
+
+readable-stream@~1.0.2:
+  version "1.0.34"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
+socket.io-adapter@0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-0.5.0.tgz#cb6d4bb8bec81e1078b99677f9ced0046066bb8b"
+  dependencies:
+    debug "2.3.3"
+    socket.io-parser "2.3.1"
+
+socket.io-client@1.7.1:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-1.7.1.tgz#6c23725edff804f3919c1ce4ebb25e591c6e61d7"
+  dependencies:
+    backo2 "1.0.2"
+    component-bind "1.0.0"
+    component-emitter "1.2.1"
+    debug "2.3.3"
+    engine.io-client "1.8.1"
+    has-binary "0.1.7"
+    indexof "0.0.1"
+    object-component "0.0.3"
+    parseuri "0.0.5"
+    socket.io-parser "2.3.1"
+    to-array "0.1.4"
+
+socket.io-parser@2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-2.3.1.tgz#dd532025103ce429697326befd64005fcfe5b4a0"
+  dependencies:
+    component-emitter "1.1.2"
+    debug "2.2.0"
+    isarray "0.0.1"
+    json3 "3.3.2"
+
+socket.io@*:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-1.7.1.tgz#a34d763fd22cd975643c2f0c7c5f14ba6da80aaf"
+  dependencies:
+    debug "2.3.3"
+    engine.io "1.8.1"
+    has-binary "0.1.7"
+    object-assign "4.1.0"
+    socket.io-adapter "0.5.0"
+    socket.io-client "1.7.1"
+    socket.io-parser "2.3.1"
+
+string_decoder@~0.10.x:
+  version "0.10.31"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
+
+to-array@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/to-array/-/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
+
+ultron@1.0.x:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.0.2.tgz#ace116ab557cd197386a4e88f4685378c8b2e4fa"
+
+ws@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.1.tgz#082ddb6c641e85d4bb451f03d52f06eabdb1f018"
+  dependencies:
+    options ">=0.0.5"
+    ultron "1.0.x"
+
+wtf-8@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wtf-8/-/wtf-8-1.0.0.tgz#392d8ba2d0f1c34d1ee2d630f15d0efb68e1048a"
+
+xmlhttprequest-ssl@1.5.3:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.3.tgz#185a888c04eca46c3e4070d99f7b49de3528992d"
+
+yeast@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"