update README with installation directions
remove svg, should not be created in source repo
merge
Separate knitr plugin from pandoc-jekyll step
This approach greatly simplifies the code used to knit Rmd to md and leaves the md to html appropriately abstracted for pandoc-based Jekyll build (which could also be used with other markdown compilers).  This allows proper control of the knitr output formats in the Rmd files.
Still needs to handle abstraction of the knitr options to a config file.
Jekyll simply ignores the .Rmd file extension