- split out view controls (rotate, reset etc) into seperate custom element
 * renamed centerView to resetView for more accuracy
 * reset view now ..resets the view correctly as expected : resolves #29
together with these changes :
 https://github.com/usco/three-js/commit/fff6173d905864087ff171478ef6d09a91d7c4f7
- added default position to camera, to be used with the changes above