- updated three.js polymer experiment :
 * added pre-built polymer.min.js
 * moved custom elements to elements folder
 * removed three-import element
 * added experimental three-stats element
 * still trying to get script imports within elements to work, as the some  polymer components (ace, codemirror, etc) clearly show this should work,
so perhaps the issue is in the way THREE.js works ?
- managed to get three.js working as script tag within custom element :
 * apparently my initial hunch was right : when wrapped correctly inside a closure , it works : this was done by using the three.js node package + browserify (hack hack)
 -> see three.wrapped.js
 * externalizing the javascript definition of elements works as well , is cleaner, and would allow much more flexibility (coffeescript ? etc): thus
all js for custom elements was extracted into seperate files and included in the html