Extract slider to wagonslider.js

I also moved some of the init stuff to index.html
Merge branch 'master' of https://github.com/peterssonjesper/hittaskatten

Conflicts:
	public/index.html
	public/js/accelerometer.js
Added slider init to app object
Merge branch 'master' of https://github.com/peterssonjesper/hittaskatten