Initial import of RGraph - JavaScript charts and graphs library.

Started in August 2008 by Richard Heyes RGraph is a JavaScript charts and graphs library
for the HTML5 platform - using the HTML5 canvas tag. With the number of supported charts
having grown to over twenty RGraph has a wide appeal and can represent many types of data
quickly and efficiently.

RGraph is free, Open Source software, released under the MIT license. It's originally written by Richard Heyes.