disable travis tests on osx
disable travis tests on osx

kasperlewau/yarn,dxu/yarn,joeyespo/yarn,ConAntonakos/yarn,bsansouci/esy,bsansouci/esy,suitupalex/yarn,mgcrea/yarn,joeyespo/yarn,mourner/yarn,lawliet89/yarn,dguo/yarn,mvestergaard/yarn,mgcrea/yarn,mourner/yarn,kasperlewau/yarn,FLGMwt/yarn,onemen/yarn,MiguelAlho/yarn,andreypopp/esy,seripap/emojiless-yarn,FLGMwt/yarn,suitupalex/yarn,mvestergaard/yarn,troydemonbreun/yarn,andreypopp/esy,dxu/yarn,seripap/emojiless-yarn,bsansouci/esy,CHECK24/yarn,MiguelAlho/yarn,dguo/yarn,andreypopp/esy,ConAntonakos/yarn,troydemonbreun/yarn,onemen/yarn,CHECK24/yarn,lawliet89/yarn