Update emulator.rb
Update emulator.rb

Fix no emulator window shows in MacOS 10.9
baberthal/ruboto,baberthal/ruboto,Jodell88/ruboto,ruboto/ruboto,ruboto/ruboto,Jodell88/ruboto,baberthal/ruboto,lucasallan/ruboto,Jodell88/ruboto,lucasallan/ruboto,ruboto/ruboto,lucasallan/ruboto