Add TravisCI config.
Fix TravisCI install command.
Add email notifications on build change.
Add a note about the -o option, as requested.
Use make to drive building and testing.
Add an end-to-end test on the ares logo.
Add build badges to the README.
Use floating versions in setup, fixed in requirements.

Also pin colormath to 1.0.9 or earlier, given later code breaks delta_e calls.