update gitignore

.gitignore

@@ -1,7 +1,35 @@
+node_modules
+npm-debug.log
+.idea
+yarn.lock
+.vscode
+package-lock.json
+
+
 # OSX
 #
 .DS_Store
 
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+project.xcworkspace
+
 # Android/IntelliJ
 #
 build/
@@ -20,4 +48,14 @@ yarn-error.log
 buck-out/
 \.buckd/
 *.keystore
-!debug.keystore
+
+# 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
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots