Let Travis only build for pushes to master branch
Let Travis only build for pushes to master branch

CocoaLumberjack/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,jum/CocoaLumberjack,sushichop/CocoaLumberjack,jum/CocoaLumberjack,sushichop/CocoaLumberjack,jum/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,sushichop/CocoaLumberjack,jum/CocoaLumberjack,sushichop/CocoaLumberjack