osx: import Cocoa/Cocoa.h in vendor.pch for mac
osx: import Cocoa/Cocoa.h in vendor.pch for mac

beni55/RubyMotion,incbee/RubyMotion,incbee/RubyMotion,beni55/RubyMotion,jjaffeux/RubyMotion,HipByte/RubyMotion,incbee/RubyMotion,katsuyoshi/RubyMotion,katsuyoshi/RubyMotion,jjaffeux/RubyMotion,katsuyoshi/RubyMotion,HipByte/RubyMotion,jjaffeux/RubyMotion,beni55/RubyMotion,jjaffeux/RubyMotion,incbee/RubyMotion,HipByte/RubyMotion,beni55/RubyMotion,katsuyoshi/RubyMotion,hboon/RubyMotion,hboon/RubyMotion,hboon/RubyMotion