Use Xcode 6.1.1 on Travis
Use Xcode 6.1.1 on Travis

See
http://docs.travis-ci.com/user/build-environment-updates/2014-12-18/.

erichoracek/Carthage,0xced/Carthage,NachoSoto/Carthage,flovilmart/Carthage,erichoracek/Carthage,NachoSoto/Carthage,flovilmart/Carthage,abbeycode/Carthage,0xced/Carthage,flovilmart/Carthage,NachoSoto/Carthage,erichoracek/Carthage,0xced/Carthage,abbeycode/Carthage,erichoracek/Carthage,abbeycode/Carthage,abbeycode/Carthage