Docs: update building instructions for android
Docs: update building instructions for android

and move Windows Phone instructions to bottom
OGRECave/ogre,paroj/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre