Adds travis-ci support.
Adds matrix for .travis.yml.
Changes language from objective-c to cpp.
Uses Linux host to build android. Mac host for Travis-ci has a lot of bugs.
Fix wrong include. 'cocos-ext.h' -> 'extensions/cocos-ext.h'.
Adds submodule of bindings-generator and adds tolua tool.
Adds bindings-generator.
tolua works.
Adds secure section for .travis.yml.
Adds GEN_LUA target for .travis.yml.
Updates travis configuration.
Merge pull request #5 from dumganhar/master

Adds Travis-ci support and adds tolua/ bindings-generator.