Added Polar Area Chart, yet to be completely implemented
Added .DS_Store to .gitignore, for mac based contributors
Added jsdocs for few functions, and aligned few
Added uglify and jshint tasks during build tasks
Testing minified file in test html
JShint fixes across source
Merging upstream with latest changes, jshinting and uglifying build results, moving to dist
Merge pull request #5 from hashd/master

Merged conflicts with upstream and added JSHint and Uglify tasks