[#179] disable panning/zooming when touching the canvas
[#179] disable panning/zooming when touching the canvas

@link http://msdn.microsoft.com/en-us/library/windows/apps/hh767313.aspx

srbala/melonJS,Smoss/Enoru-eco,TukekeSoft/melonJS,MarkoIvanetic/melonJS,gopalindians/melonJS,melonjs/melonJS,TukekeSoft/melonJS,MarkoIvanetic/melonJS,melonjs/melonJS,rlugojr/melonJS,gopalindians/melonJS,gopalindians/melonJS,TukekeSoft/melonJS,Smoss/Enoru-eco,rlugojr/melonJS,srbala/melonJS,rlugojr/melonJS,srbala/melonJS