try to fix issue with xcode 8 tests on travis caused by xcpretty
try to fix issue with xcode 8 tests on travis caused by xcpretty

SnapKit/Masonry,Ray0218/Masonry,iwill/Masonry,Lightricks/Masonry,SpruceHealth/Masonry,Lightricks/Masonry,SpruceHealth/Masonry,SpruceHealth/Masonry,Ray0218/Masonry,SnapKit/Masonry,moneytree/Masonry,iwill/Masonry,moneytree/Masonry