vmg/redcarpet — pull request #289 by robin850 (2013-07-29 17:31:26+00:00)
Title: Install the tidy command on Travis

Hi,

Our conformance test didn't run correctly since we hadn't installed the tidy command. Also update the contribution guideline with the install command for few operating systems.

This problem has introduced issues like #286. Actually, it's my bad. I've never really care about the conformance suite but I should have.

Have a nice day.