Adds submodule of cocos2d-x
issue #4116: Adds spidermonkey lib
Adds native test-project.
Adds tests submodule.
Adds bindings codes and native project file.
Adds libjs_static.a.
Adds .gitignore.
Updates cocos2d-x submodule.
Merge pull request #1 from dumganhar/master

First commit.