updated gitignore to exclude xcode files

.gitignore

@@ -32,3 +32,34 @@ Temporary Items
 .apdisk
 .lock-waf_darwin_build
 build
+
+
+
+# Created by https://www.gitignore.io/api/xcode
+
+### Xcode ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## Build generated
+build/
+DerivedData
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+
+## Other
+*.xccheckout
+*.moved-aside
+*.xcuserstate
+*.pbxproj
+*.xcworkspacedata