Add Travis support

[gfontenot]

These changes enable Travis support by default.

[hyperspacemark]

Try running this without the env: export LANG in the travis.yml. When I set this up on Receipts, I had to do it because of a bug on Travis at the time. But it really shouldn't be necessary as UTF-8 is the default.

If it works, we should pop it out of our other Travis configs.

[gfontenot]

I should note, btw, that this isn't quite working yet. The way we're generating the schemes isn't right, and the test action isn't being set up. I'm working on that now.

[gfontenot]

I'm going to leave the LANG setting in for now, since Travis throws warnings without it.