add function to automate screenshots (draft)
use bootstrap docs css for published charts.
add utilities to rCharts.
add setTemplate and setLib
fix bug. list not lists.
add time delay as an option in take_screenshot.
update take_screenshot to work with urls as well as rfiles
update nvd3 to latest version (need to clear out older files still)
overload show method to use print when knitr.in.progress = TRUE
add show fix
Merge pull request #147 from reinholdsson/show-fix

Fix show method when run inside knitr.
add function to communicate with slidify to automatically add libraries being used as ext_widgets.
fixed a bug in publishing to rpubs (thanks @kohske)
add support for controls
fix minor bug in take_screenshot
comment out screenshot lines in publish.
move addControls to rCharts class.
add angularJS controls to polychart.
fix buggy setBounds for dimple and add timeAxis for dimple
new version of dimple.v1.js and add timeAxis example/test