add ability to inject externa js/css assets
move choropleth to Leaflet.R and add Datamaps class.
add initial version of rcharts app
update rcharts opencpu app
update rcharts app
add ability to view chart in rstudio viewer.
add slide deck to example rcharts app.
update datamaps template
Merge branch 'dev' of github.com:ramnathv/rCharts
update nvd3 cdn link in config.yml
fix bug in show method for static mode
add digits = 13 in highcharts for correctly handling dates.