update gitignore

.gitignore

@@ -1,12 +1,10 @@
-# Dependency directory
-# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
-# Xcode
-!**/*.xcodeproj
-!**/*.pbxproj
-!**/*.xcworkspacedata
-!**/*.xcsettings
-!**/*.xcscheme
+### Xcode ###
+
+## Build generated
 build/
+DerivedData/
+
+## Various settings
 *.pbxuser
 !default.pbxuser
 *.mode1v3
@@ -15,18 +13,18 @@ build/
 !default.mode2v3
 *.perspectivev3
 !default.perspectivev3
-xcuserdata
-*.xccheckout
+xcuserdata/
+
+## Other
 *.moved-aside
-DerivedData
-*.hmap
-*.ipa
-*.xcuserstate
-project.xcworkspace
+*.xccheckout
+*.xcscmblueprint
+
+### /Xcode ###
 
-# OS X
+### OS X
 .DS_Store
 
-# Node
+### Node
 node_modules
 *.log