Merge pull request #7213 from MSOpenTech/wp8-v3-fix

WP8 v3 fix for cpp template
Add Lua binding for ActionTimeline related and related test cases
Update bindings-generator submodule
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_SceneReader
Merge pull request #7215 from samuele3hu/v3_SceneReader

Add Lua binding for ActionTimeline related,related test cases and update bindings-generator submodule