various fixes to tests, along with groundwork for adding travis and coveralls support

[bcoe]

• upgraded nyc to the newest release, it has much nicer test output:

- added .travis.yml, so that as soon as soon as (@brycebaril, or @mranney configure Coveralls, and Travis we can add some badges). - added a test for queue.js (which had poor coverage), in the process refactored the tests so that it's easier to split them into multiple files. - made it so tests are run with both the `hiredis` and the `javascript` parser -- this raised coverage significantly. - fixed a major bug with the test suite, once you hit the domains test all tests afterwords did not properly bubble errors.

Doing all this brought test coverage up to 86% not too shabby.

reviewers: @raydog @erinspice

[raydog]

There's a lot of good stuff in here. Do you feel there'd be value in moving node_redis to use a standard test runner, like mocha or similar? I always felt it strange that this library rolls it's own... Who knows what other bugs like the domain one exists in here...

[bcoe]

@raydog I was also thinking it would probably be worth moving to mocha, or maybe node-tap which @isaacs' has been putting a ton of work into.

I'd be happy to take that on as round two of this work, I think it can be done separately though?

[erinishimoticha]

Agree! Let's convert them to use mocha or similar. I'd love to help with the test conversion.

[bcoe]

@erinspice @raydog, I've managed to get stuff running on travis. I'm going to go ahead and rebase/merge this, but let's open an issue to discuss moving things to mocha.

[mranney]

For sure, let's use something standard.

In case you are wondering why things are the way that they are, I had originally found it very hard to realistically mock redis-server, so I wrote my own "test suite" that used a real redis-server.

That was like 5 years ago, and I'm sure there are much better ways to do things now.