Add XCTest framework highlighting support
Add XCTest framework highlighting support

https://developer.apple.com/library/tvos/documentation/DeveloperTools/Conceptual/testing_with_xcode/chapters/03-testing_basics.html
aurusov/highlight.js,tenbits/highlight.js,dbkaplun/highlight.js,Sannis/highlight.js,tenbits/highlight.js,StanislawSwierc/highlight.js,carlokok/highlight.js,tenbits/highlight.js,carlokok/highlight.js,StanislawSwierc/highlight.js,aurusov/highlight.js,Sannis/highlight.js,highlightjs/highlight.js,sourrust/highlight.js,teambition/highlight.js,palmin/highlight.js,aurusov/highlight.js,isagalaev/highlight.js,dbkaplun/highlight.js,bluepichu/highlight.js,bluepichu/highlight.js,highlightjs/highlight.js,MakeNowJust/highlight.js,highlightjs/highlight.js,isagalaev/highlight.js,bluepichu/highlight.js,carlokok/highlight.js,Sannis/highlight.js,sourrust/highlight.js,lead-auth/highlight.js,sourrust/highlight.js,MakeNowJust/highlight.js,palmin/highlight.js,MakeNowJust/highlight.js,dbkaplun/highlight.js,teambition/highlight.js,carlokok/highlight.js,palmin/highlight.js,highlightjs/highlight.js,teambition/highlight.js