fix file encoding
issue #3401: fix physics lua binding.
issue #3401: add lua contact test
issue #3401: add lua physics position/rotation test
Merge pull request #23 from boyu0/iss3401_physics_binding

issue #3401: physics binding
[AUTO] : updating luabinding automatically
Merge pull request #24 from CocosRobot/update_lua_bindings_1393828317

[AUTO] : updating luabinding automatically
fix:Add `reload` function to support reload module file
Merge branch 'master' of https://github.com/cocos2d/cocos2d-lua into tip_generator
fix:Modify the comments
fix:Update cocos2d-x submodule
Merge pull request #25 from samuele3hu/tip_generator

fix: Add `reload` function to support reload module file
[AUTO] : updating luabinding automatically
Merge pull request #26 from CocosRobot/update_lua_bindings_1393835156

[AUTO] : updating luabinding automatically
issue #3401: fix physics position/rotation test bug.
Merge pull request #27 from boyu0/iss3401_physics_binding

issue #3401: fix physics position/rotation test bug.
Update the submodule about cocos2d-x
fix:Resolve the compile error
fix:Remove `using namespace cocos2d` from the LuaOpengl.h
Merge pull request #28 from samuele3hu/tip_generator

Update the submodule about cocos2d-x