Add routine to find R executable from registry
Missing import
Only read registry if `_winreg` module available
Merge pull request #2 from jasonbot/master

Add routine to find R executable from registry
set language to 'Python'

We don't currently have an 'R' language class, change this so it shows up on esri.github.io
Convert documentation to Markdown. Fixes #6, #3.
images directory.
Update doc links to valid resources. Fixes #5.
Merge remote-tracking branch 'upstream/master'