Added support on constraint maker for iOS 8 properties
Added support on constraint maker for iOS 8 properties

chengkaizone/SnapKit,zht415/SnapKit,sai43/SnapKit,ramoslin02/SnapKit,brittonmobile/SnapKit,hanangellove/SnapKit,Ju2ender/SnapKit,fhchina/SnapKit,jiwonsis/SnapKit,wmfgithub/SnapKit,zilaiyedaren/SnapKit,ernestopino/SnapKit,dawangjiaowolaixunshan/SnapKit,lioonline/SnapKit,hanangellove/SnapKit,dawangjiaowolaixunshan/SnapKit,loupman/SnapKit,QuanGe/SnapKit,JummyHuang/SnapKit,smalldu/SnapKit,1yvT0s/SnapKit,CoderJWYang/SnapKit,zilaiyedaren/SnapKit,pengleelove/SnapKit,sunzeboy/SnapKit,cnbin/SnapKit,bestwpw/SnapKit,ArthurKK/SnapKit,MaWenxing/SnapKit,imjerrybao/SnapKit,ramoslin02/SnapKit,zht415/SnapKit,loupman/SnapKit,QuanGe/SnapKit,CoderJWYang/SnapKit,BlessNeo/SnapKit,CoderJackyHuang/SnapKit,aleffert/SnapKit,msdgwzhy6/SnapKit,lioonline/SnapKit,CoderJackyHuang/SnapKit,JummyHuang/SnapKit,398539445/SnapKit,1yvT0s/SnapKit,leasual/SnapKit,SnapKit/SnapKit,msdgwzhy6/SnapKit,Rdxer/SnapKit,leasual/SnapKit,pengleelove/SnapKit,duanhjlt/SnapKit,sai43/SnapKit,398539445/SnapKit,zhaoguohui/SnapKit,yujiaao/SnapKit,aleffert/SnapKit,duanhjlt/SnapKit,bestwpw/SnapKit,cnbin/SnapKit,BlessNeo/SnapKit,zhaoguohui/SnapKit,HackRoy/SnapKit,MaWenxing/SnapKit,smalldu/SnapKit,yujiaao/SnapKit,jiwonsis/SnapKit,Rdxer/SnapKit,ernestopino/SnapKit,ArthurKK/SnapKit,imjerrybao/SnapKit,sandyway/SnapKit,fhchina/SnapKit,SnapKit/SnapKit,CoderJFCK/SnapKit,brittonmobile/SnapKit,CoderJFCK/SnapKit,chengkaizone/SnapKit,sandyway/SnapKit,Ju2ender/SnapKit,sunzeboy/SnapKit,wmfgithub/SnapKit,HackRoy/SnapKit