Add Tests

[bakkerthehacker]

Currently there are no tests. I did test most of the code while writing it, but there still may be issues, especially in the FrameParser and FrameSerializer.

[bakkerthehacker]

The test framework have been added. Tests for the low level FrameParser and FrameSerializer have been added.

[bakkerthehacker]

the tests for FrameParser and FrameSerializer need to test the read and used properties

[bakkerthehacker]

In addition to testing the low level frame stuff, the actual functionality of bramqp should be tested with a RabbitMQ server. TravisCI should have a server to use for this.