Create R.html


![the-r-series](https://cloud.githubusercontent.com/assets/538575/3709300/e03ee842-1452-11e4-9158-986d64589b4e.png)
R Introductory motivational slides prepared with @danlwarren.
Need to include attached image for reference book's cover page as stated in slides.
I'd put the aside after all of the points (including the fragment with CRAN Task Views), since the aside comments on both what's above it and what's below it.