Ignore xcuserstate

xcuserstate files are generated from within Xcode and saved in your project bundle to remember your last opened file, the open state of any group folders, open tabs, and any other user setting your project might need to remember
Ignore xcuserstate

xcuserstate files are generated from within Xcode and saved in your project bundle to remember your last opened file, the open state of any group folders, open tabs, and any other user setting your project might need to remember, this is something that shouldn't be tracked in version control
Merge pull request #1040 from NSElvis/master

Ignore xcuserstate