egulias/ListenersDebugCommandBundle — pull request #27 by jrobeson (2014-08-28 10:05:02+00:00)
Title: install composer from install key in .travis.yml

as per this post which makes a lot of sense:
http://till.klampaeckel.de/blog/archives/204-Whats-wrong-with-composer-and-your-.travis.yml.html