Avoid extracting binary files from submissions.
Configure travis to install library dependencies.

Needed for the ruby-filemagic gem.
Merge pull request #149 from LaunchAcademy/invalid-byte-sequence

Invalid byte sequence
Merge branch 'master' of github.com:LaunchAcademy/event_horizon
updated dailies for 12/19
Merge branch 'master' of github.com:LaunchAcademy/event_horizon
update dailies for 12/19/2014