Added main script and files array as we should now be common.js module compatible via UMD, so we can register in NPM for usage with browserify
Added main script and files array as we should now be common.js module compatible via UMD, so we can register in NPM for usage with browserify

cr3ative/chartist-js,hansmaad/chartist-js,chartist-js/chartist,gionkunz/chartist-js,cr3ative/chartist-js,chartist-js/chartist,gionkunz/chartist-js,chartist-js/chartist,hansmaad/chartist-js