Added slider to "New Instancing" sample to play with different ammount of instances in scene
Added slider to "New Instancing" sample to play with different ammount of instances in scene

--HG--
extra : rebase_source : 2853be60447494d1d3b847308d21b79a3c6fb14c

jhu-lcsr-forks/ogre,vancepym/ogre,largerussiangames/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,vancepym/ogre,jhu-lcsr-forks/ogre,nezticle/ogre,nezticle/ogre,vancepym/ogre,vancepym/ogre,jhu-lcsr-forks/ogre,nezticle/ogre,nezticle/ogre,vancepym/ogre,largerussiangames/ogre,largerussiangames/ogre,largerussiangames/ogre