diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000000..5186d07068
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+4.0
diff --git a/Gemfile.lock b/Gemfile.lock
index 56ac5bfd3b..cd263d1118 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,36 +1,36 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    CFPropertyList (2.3.4)
-    activesupport (4.2.7.1)
+    CFPropertyList (2.3.5)
+    activesupport (4.2.9)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
-    claide (1.0.1)
-    cocoapods (1.1.1)
+    claide (1.0.2)
+    cocoapods (1.3.1)
       activesupport (>= 4.0.2, < 5)
-      claide (>= 1.0.1, < 2.0)
-      cocoapods-core (= 1.1.1)
+      claide (>= 1.0.2, < 2.0)
+      cocoapods-core (= 1.3.1)
       cocoapods-deintegrate (>= 1.0.1, < 2.0)
-      cocoapods-downloader (>= 1.1.2, < 2.0)
+      cocoapods-downloader (>= 1.1.3, < 2.0)
       cocoapods-plugins (>= 1.0.0, < 2.0)
       cocoapods-search (>= 1.0.0, < 2.0)
       cocoapods-stats (>= 1.0.0, < 2.0)
-      cocoapods-trunk (>= 1.1.1, < 2.0)
+      cocoapods-trunk (>= 1.2.0, < 2.0)
       cocoapods-try (>= 1.1.0, < 2.0)
-      colored (~> 1.2)
+      colored2 (~> 3.1)
       escape (~> 0.0.4)
       fourflusher (~> 2.0.1)
       gh_inspector (~> 1.0)
-      molinillo (~> 0.5.1)
+      molinillo (~> 0.5.7)
       nap (~> 1.0)
-      xcodeproj (>= 1.3.3, < 2.0)
-    cocoapods-core (1.1.1)
-      activesupport (>= 4.0.2, < 5)
+      ruby-macho (~> 1.1)
+      xcodeproj (>= 1.5.1, < 2.0)
+    cocoapods-core (1.3.1)
+      activesupport (>= 4.0.2, < 6)
       fuzzy_match (~> 2.0.4)
       nap (~> 1.0)
     cocoapods-deintegrate (1.0.1)
@@ -39,11 +39,11 @@ GEM
       nap
     cocoapods-search (1.0.0)
     cocoapods-stats (1.0.0)
-    cocoapods-trunk (1.1.2)
+    cocoapods-trunk (1.2.0)
       nap (>= 0.8, < 2.0)
       netrc (= 0.7.8)
     cocoapods-try (1.1.0)
-    colored (1.2)
+    colored2 (3.1.2)
     escape (0.0.4)
     faraday (0.13.1)
       multipart-post (>= 1.2, < 3)
@@ -60,10 +60,9 @@ GEM
       rainbow (>= 2.1)
       rake (>= 10.0)
       retriable (~> 2.1)
-    i18n (0.7.0)
-    json (1.8.5)
-    minitest (5.10.1)
-    molinillo (0.5.5)
+    i18n (0.8.6)
+    minitest (5.10.3)
+    molinillo (0.5.7)
     multi_json (1.12.2)
     multipart-post (2.0.0)
     nanaimo (0.2.3)
@@ -74,23 +73,23 @@ GEM
     public_suffix (3.0.0)
     rainbow (2.2.2)
       rake
-    rake (12.0.0)
+    rake (12.1.0)
     retriable (2.1.0)
-    rouge (1.11.1)
+    rouge (2.0.7)
+    ruby-macho (1.1.0)
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
-    xcodeproj (1.4.2)
+    xcodeproj (1.5.1)
       CFPropertyList (~> 2.3.3)
-      activesupport (>= 3)
-      claide (>= 1.0.1, < 2.0)
-      colored (~> 1.2)
+      claide (>= 1.0.2, < 2.0)
+      colored2 (~> 3.1)
       nanaimo (~> 0.2.3)
-    xcpretty (0.2.4)
-      rouge (~> 1.8)
+    xcpretty (0.2.8)
+      rouge (~> 2.0.7)
 
 PLATFORMS
   ruby