stuff
Merge pull request #3 from airhenig/master

##Small changes:
*Reorganized html shell and css so that there's no longer a .body class - it's just the canvas in the body now.
*Added colorConvert.js, a utility for working in different color spaces

##Big changes: Optimization of bubbles.js
*Changed code to preload most variables
*Changed Circle prototype to add draw function instead of doing it at the time of object creation (for each new Circle)
*Other miscellaneous optimizations
Merged Alex's reorganization and optimizations - changed spacing in js code using jsfiddle.net