build time improvements

.gitignore

@@ -1,8 +1,13 @@
-# OS X
-.DS_Store
-
 # Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+.build/
 build/
+DerivedData/
+
+## Various settings
 *.pbxuser
 !default.pbxuser
 *.mode1v3
@@ -11,29 +16,54 @@ build/
 !default.mode2v3
 *.perspectivev3
 !default.perspectivev3
-xcuserdata
-*.xccheckout
-profile
+xcuserdata/
+
+## Other
 *.moved-aside
-DerivedData
+*.xcuserstate
+
+## Obj-C/Swift specific
 *.hmap
 *.ipa
+*.dSYM.zip
+*.dSYM
 
-# Bundler
-.bundle
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
 
-Carthage
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+.build/
+
+# CocoaPods
+#
 # We recommend against adding the Pods directory to your .gitignore. However
 # you should judge for yourself, the pros and cons are mentioned at:
-# http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
-# 
-# Note: if you ignore the Pods directory, make sure to uncomment
-# `pod install` in .travis.yml
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+# Pods/
+
+# Carthage
 #
-Pods/
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build
 
-Example/Podfile.lock
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://github.com/fastlane/fastlane/blob/master/fastlane/docs/Gitignore.md
 
-*.lock
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots
+fastlane/test_output
 
-*.lock
+Packages/
+docs/