Group#map and Group#filter return a Group
Update gitignore
EOL stuff, I hate this
Ignore temp folder
addable module is now ES6
Assets module is now ES6
Audio module is now ES6
Base module is now ES6
Behavior module is now ES6
Canvas renderer is now ES6
color constants are now ES6
Color module is now ES6
DOM renderer is now ES6
Game module is now ES6
GameObject module is now ES6
Group module is now ES6
Graphics module is now ES6
Model module is now ES6
renderable module is now ES6
rootElement module is now ES6