Added utility method to get class name
Merge branch 'master' of github.com:Imaginea/uvCharts

Conflicts:
	src/gfx/bar.js
	src/gfx/line.js
	src/gfx/percent_bar.js
	src/gfx/stacked_bar.js
	src/gfx/stepup_bar.js
	src/gfx/waterfall.js
	src/util/effects.js
	src/util/utility.js
Added config to define precision for floating point numbers
Fixed the function name
Merge pull request #7 from priyankadudani/master

Added utility method to add a class