Unit tests for Chart (incomplete).
Merged axis refactor.
Fixed failing tests after merging axis refactor from master.
Completed tests for Chart.init() ready for review.
Merge pull request #53 from niksoper/master

Chart unit tests
Merge commit '62adcb383d39a0021df7b6d193871c3fbf91440a'

Conflicts:
	dist/insight.js
	dist/insight.min.js
	doc/Chart.js.html