Added RMarkdown to the list of languages
Add `.jshintrc` to JSON filenames

JSHint tool for linting JavaScript uses `.jshintrc` configuration file.
It is in JSON format.

Example: https://github.com/jquery/jquery/blob/master/.jshintrc
Merge pull request #835 from hkdobrev/jshintrc

Add `.jshintrc` to JSON filenames
Merge pull request #831 from ethanwhite/master

Added RMarkdown to the list of languages
Add ace mode
Drop incorrect interpeter

Fixes 1.8.7 issues. cc @arfon
Bump to 2.10.5
Adding rmd example
Merge pull request #838 from github/rmd-sample

Adding rmd example
Merge branch 'master' into heuristics