Added toLowerCase() to the function which was used to format class names.
Added showlabel variable for showing/hiding labels on the graph. Added showhoverlabel for showing/hiding labels while hovering the graph.
adding download options
addding download js dependencies
removed exportHTML() function
Merge branch 'master' of https://github.com/ksnov/uvCharts
Merged Pull Request #1 .
Added color codes in place of color strings.
Merge pull request #3 from shrimalmadhur/master

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