Adding tools/tolua .
Updating bindings-generator, adding lua target. It's not finished.
We has to pass the target to bindings-generator since we have add lua target.
Adding tools/tolua .
issue #2433:lua binding generator
Merge branch 'iss2433-lua-bindings-generator' of git://github.com/dumganhar/cocos2d-x into iss2433-lua-bindings-generator
issue #2433:lua binding generator add hello.lua
issue #2433:Modify lua binding generator template and releated action test
issue #2433:Modify Testlua sample and add some manual binding functions
issue #2433:Modify cocos2d.ini
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2433-lua-bindings-generator

Conflicts:
	cocos2d_libs.xcodeproj/project.pbxproj
	tools/bindings-generator
issue #2433:Update submodule and project
issue #2433:Update lua manual binding and modify some samples
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2433-lua-bindings-generator
language option is invalid print mesage

If we input invalid mistook language option
issue #2433:Modify TestLua samples and some .ini files
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2433-lua-bindings-generator
issue #2433:Modify TestLua samples and add some manual binding code
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into iss2433-lua-bindings-generator
issue #2433:Add a newline