Updates .gitignore. Ignores 'templates/js-template-default/frameworks/js-bindings'
Fixing a bug that `filename_script` wasn't cleared in `ScriptingCore::cleanup`.
Updates jsb template.
Merge pull request #73 from dumganhar/master

BUG fixes for runtime.
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js