Travis CI integration for dogecoin

I've doge-ified all of the tests so that they now pass. I've also added support for [Travis CI](http://travis-ci.org/). This will make testing pull requests much easier for everyone.

[Here is the travis build test](https://travis-ci.org/sinemetu1/dogecoin/builds/17308446) for this pull request. Someone who has access to the dogecoin code-base will need to create an account on the Travis site. It's free and widely used.