anthonyalberto/mysql_online_migrations — pull request #1 by morgo (2013-11-25 21:16:36+00:00)
Title: included better link to operations with support for LOCK=NONE

Optionally you could also link to http://www.tocker.ca/2013/11/05/a-closer-look-at-online-ddl-in-mysql-5.6.html, but I thought it would be better to point to the source.