Synced gitignores with github repo (#1245)

* Renamed scripts directory into contrib

* Added script to download gitignores from github

* Synced gitignores with github repo

options/gitignore/Objective-C

@@ -4,7 +4,7 @@
 
 ## Build generated
 build/
-DerivedData
+DerivedData/
 
 ## Various settings
 *.pbxuser
@@ -15,25 +15,26 @@ DerivedData
 !default.mode2v3
 *.perspectivev3
 !default.perspectivev3
-xcuserdata
+xcuserdata/
 
 ## Other
-*.xccheckout
 *.moved-aside
-*.xcuserstate
+*.xccheckout
 *.xcscmblueprint
 
 ## Obj-C/Swift specific
 *.hmap
 *.ipa
+*.dSYM.zip
+*.dSYM
 
 # 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-check-the-pods-directory-into-source-control
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
 #
-#Pods/
+# Pods/
 
 # Carthage
 #
@@ -41,3 +42,22 @@ xcuserdata
 # Carthage/Checkouts
 
 Carthage/Build
+
+# 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://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots
+fastlane/test_output
+
+# Code Injection
+#
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/