Includes a link to the current commit in the test message.
Fixes omission of nonce in Travis test message.

Oops.
Fixes under-encoding of nonce formatting parameter.

This is what I get for generating a format string with a format string.
Fixes a missing space in the test message's title text.

I'm an idiot.
Merge pull request #25 from jeremybanks/nicer-test-message

Include a link to the current commit in the test message