CommonMarker

Ruby wrapper for libcmark-gfm, GitHub's fork of the reference parser for
CommonMark.  It passes all of the C tests, and is therefore spec-complete.
It also includes extensions to the CommonMark spec as documented in the
[itHub Flavored Markdown spec, such as support for tables, strikethroughs,
and autolinking.

Homepage:
https://github.com/gjtorikian/commonmarker
