add git ignore

.gitignore

@@ -0,0 +1,61 @@
+# Xcode
+build/
+DerivedData/
+*.xcuserstate
+*.xccheckout
+*.xcscmblueprint
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+# Swift Package Manager
+.build/
+.swiftpm/
+Package.resolved
+
+# CocoaPods
+Pods/
+*.xcworkspace
+!default.xcworkspace
+
+# Carthage
+Carthage/Build/
+Carthage/Checkouts/
+
+# fastlane
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+iOSInjectionProject/
+
+# Accio
+Dependencies/
+.accio/
+
+# Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+*.swp
+*~.nib
+
+# Crashlytics
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties