WIP - some work on the vungle plugin. Works on Android / iOS but NOT on Unity and Cocos2dx
Merge branch 'master' of github.com:soomla/soomla-vungle

* 'master' of github.com:soomla/soomla-vungle:
  Update README.md
  Update README.md
  Update README.md
  Update README.md
  Update README.md