Changed travis settings so that it uses prerelease versions of CocoaPods
Changed travis settings so that it uses prerelease versions of CocoaPods

This allows CocoaLumberjack to work with Swift.

xingfukun/CocoaLumberjack,Automatic/CocoaLumberjack,xingfukun/CocoaLumberjack,SuPair/CocoaLumberjack,SportsLock/CocoaLumberjack,SummerHanada/CocoaLumberjack,wushenchao/CocoaLumberjack,stephencelis/CocoaLumberjack,jum/CocoaLumberjack,captain-zhu/CocoaLumberjack,xuxubin/CocoaLumberjack,timbodeit/CocoaLumberjack,jingchunYuan/CocoaLumberjack,Plumzi/CocoaLumberjack,ericzhou2008/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,WMSmile/CocoaLumberjack,kotdark/CocoaLumberjack,zjh171/CocoaLumberjack,xb123456456/CocoaLumberjack,Plumzi/CocoaLumberjack,DD-P/CocoaLumberjack,heefan/CocoaLumberjack,sinoru/CocoaLumberjack,timothyrobb/CocoaLumberjack,chao95957/CocoaLumberjack,Bogon/CocoaLumberjack,chengkaizone/CocoaLumberjack,chengkaizone/CocoaLumberjack,wmanriques/CocoaLumberjack,sevenguin/CocoaLumberjack,ericzhou2008/CocoaLumberjack,Nuglif/CocoaLumberjack,SuPair/CocoaLumberjack,xb123456456/CocoaLumberjack,Plumzi/CocoaLumberjack,sandyway/CocoaLumberjack,Jawbone/CocoaLumberjack,Jawbone/CocoaLumberjack,heefan/CocoaLumberjack,sandyway/CocoaLumberjack,Automatic/CocoaLumberjack,hughescr/CocoaLumberjack,jingchunYuan/CocoaLumberjack,keslcod/CocoaLumberjack,Hidebush/CocoaLumberjack,AutoScout24/CocoaLumberjack,sandyway/CocoaLumberjack,AutoScout24/CocoaLumberjack,Automatic/CocoaLumberjack,Automatic/CocoaLumberjack,mqeizi/CocoaLumberjack,xb123456456/CocoaLumberjack,sevenguin/CocoaLumberjack,captain-zhu/CocoaLumberjack,chengkaizone/CocoaLumberjack,zhakui/CocoaLumberjack,xingfukun/CocoaLumberjack,sureshxaton/CocoaLumberjack,zhakui/CocoaLumberjack,keslcod/CocoaLumberjack,cantinac/CocoaLumberjack,zjh171/CocoaLumberjack,hughescr/CocoaLumberjack,zhakui/CocoaLumberjack,ranterle/CocoaLumberjack,jum/CocoaLumberjack,wudijimao/CocoaLumberjack,xb123456456/CocoaLumberjack,jingchunYuan/CocoaLumberjack,layerhq/CocoaLumberjack,sinoru/CocoaLumberjack,Jawbone/CocoaLumberjack,wmanriques/CocoaLumberjack,MaddTheSane/CocoaLumberjack,sandyway/CocoaLumberjack,Voxer/CocoaLumberjack,chao95957/CocoaLumberjack,zjh171/CocoaLumberjack,keslcod/CocoaLumberjack,captain-zhu/CocoaLumberjack,zjh171/CocoaLumberjack,wudijimao/CocoaLumberjack,timbodeit/CocoaLumberjack,wushenchao/CocoaLumberjack,SummerHanada/CocoaLumberjack,SummerHanada/CocoaLumberjack,xingfukun/CocoaLumberjack,sureshxaton/CocoaLumberjack,chengkaizone/CocoaLumberjack,SuPair/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,AutoScout24/CocoaLumberjack,DD-P/CocoaLumberjack,Bogon/CocoaLumberjack,MaddTheSane/CocoaLumberjack,captain-zhu/CocoaLumberjack,stephencelis/CocoaLumberjack,zilaiyedaren/CocoaLumberjack,keslcod/CocoaLumberjack,Automatic/CocoaLumberjack,jum/CocoaLumberjack,kleemedia/CocoaLumberjack,sushichop/CocoaLumberjack,cantinac/CocoaLumberjack,kleemedia/CocoaLumberjack,Jawbone/CocoaLumberjack,zilaiyedaren/CocoaLumberjack,keslcod/CocoaLumberjack,wudijimao/CocoaLumberjack,wudijimao/CocoaLumberjack,SportsLock/CocoaLumberjack,Nuglif/CocoaLumberjack,wmanriques/CocoaLumberjack,sureshxaton/CocoaLumberjack,xingfukun/CocoaLumberjack,zilaiyedaren/CocoaLumberjack,Plumzi/CocoaLumberjack,AutoScout24/CocoaLumberjack,dmauro/CocoaLumberjack,Hidebush/CocoaLumberjack,Bogon/CocoaLumberjack,ranterle/CocoaLumberjack,sushichop/CocoaLumberjack,ericzhou2008/CocoaLumberjack,sushichop/CocoaLumberjack,Automatic/CocoaLumberjack,kleemedia/CocoaLumberjack,mpapp/CocoaLumberjack,wudijimao/CocoaLumberjack,sevenguin/CocoaLumberjack,layerhq/CocoaLumberjack,kotdark/CocoaLumberjack,Jawbone/CocoaLumberjack,jingchunYuan/CocoaLumberjack,timbodeit/CocoaLumberjack,mpapp/CocoaLumberjack,sevenguin/CocoaLumberjack,cantinac/CocoaLumberjack,xuxubin/CocoaLumberjack,mqeizi/CocoaLumberjack,timothyrobb/CocoaLumberjack,wmanriques/CocoaLumberjack,chao95957/CocoaLumberjack,xuxubin/CocoaLumberjack,kotdark/CocoaLumberjack,mqeizi/CocoaLumberjack,richardgroves/CocoaLumberjack,MaddTheSane/CocoaLumberjack,wmanriques/CocoaLumberjack,SummerHanada/CocoaLumberjack,stephencelis/CocoaLumberjack,kleemedia/CocoaLumberjack,jingchunYuan/CocoaLumberjack,Bogon/CocoaLumberjack,timothyrobb/CocoaLumberjack,zilaiyedaren/CocoaLumberjack,zhakui/CocoaLumberjack,kleemedia/CocoaLumberjack,sureshxaton/CocoaLumberjack,kotdark/CocoaLumberjack,ranterle/CocoaLumberjack,DD-P/CocoaLumberjack,layerhq/CocoaLumberjack,mpapp/CocoaLumberjack,stephencelis/CocoaLumberjack,Nuglif/CocoaLumberjack,chao95957/CocoaLumberjack,wushenchao/CocoaLumberjack,sushichop/CocoaLumberjack,timbodeit/CocoaLumberjack,SuPair/CocoaLumberjack,chao95957/CocoaLumberjack,MaddTheSane/CocoaLumberjack,captain-zhu/CocoaLumberjack,AutoScout24/CocoaLumberjack,dmauro/CocoaLumberjack,heefan/CocoaLumberjack,ranterle/CocoaLumberjack,hughescr/CocoaLumberjack,heefan/CocoaLumberjack,zhakui/CocoaLumberjack,stephencelis/CocoaLumberjack,kotdark/CocoaLumberjack,dmauro/CocoaLumberjack,Hidebush/CocoaLumberjack,sureshxaton/CocoaLumberjack,Voxer/CocoaLumberjack,MaddTheSane/CocoaLumberjack,Bogon/CocoaLumberjack,richardgroves/CocoaLumberjack,ericzhou2008/CocoaLumberjack,layerhq/CocoaLumberjack,mqeizi/CocoaLumberjack,sevenguin/CocoaLumberjack,layerhq/CocoaLumberjack,xuxubin/CocoaLumberjack,SportsLock/CocoaLumberjack,sinoru/CocoaLumberjack,wushenchao/CocoaLumberjack,richardgroves/CocoaLumberjack,sandyway/CocoaLumberjack,mqeizi/CocoaLumberjack,sinoru/CocoaLumberjack,ranterle/CocoaLumberjack,richardgroves/CocoaLumberjack,zilaiyedaren/CocoaLumberjack,MaddTheSane/CocoaLumberjack,zjh171/CocoaLumberjack,richardgroves/CocoaLumberjack,hughescr/CocoaLumberjack,Voxer/CocoaLumberjack,ericzhou2008/CocoaLumberjack,cantinac/CocoaLumberjack,hughescr/CocoaLumberjack,SuPair/CocoaLumberjack,wushenchao/CocoaLumberjack,Plumzi/CocoaLumberjack,Voxer/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,SportsLock/CocoaLumberjack,WMSmile/CocoaLumberjack,SportsLock/CocoaLumberjack,WMSmile/CocoaLumberjack,timbodeit/CocoaLumberjack,sinoru/CocoaLumberjack,timothyrobb/CocoaLumberjack,cantinac/CocoaLumberjack,heefan/CocoaLumberjack,cantinac/CocoaLumberjack,timothyrobb/CocoaLumberjack,xb123456456/CocoaLumberjack,CocoaLumberjack/CocoaLumberjack,WMSmile/CocoaLumberjack,chengkaizone/CocoaLumberjack,SummerHanada/CocoaLumberjack,Nuglif/CocoaLumberjack,xuxubin/CocoaLumberjack,Hidebush/CocoaLumberjack,Nuglif/CocoaLumberjack,jum/CocoaLumberjack,WMSmile/CocoaLumberjack,Voxer/CocoaLumberjack,Hidebush/CocoaLumberjack