Merge pull request #2163 from commscheck/xcode-source-control

Update Objective-C and Swift to match Xcode.gitignore

Objective-C.gitignore

@@ -19,7 +19,8 @@ xcuserdata/
 
 ## Other
 *.moved-aside
-*.xcuserstate
+*.xccheckout
+*.xcscmblueprint
 
 ## Obj-C/Swift specific
 *.hmap

Swift.gitignore

@@ -19,7 +19,8 @@ xcuserdata/
 
 ## Other
 *.moved-aside
-*.xcuserstate
+*.xccheckout
+*.xcscmblueprint
 
 ## Obj-C/Swift specific
 *.hmap