Updated travis test definitions.
Merge pull request #6 from orchestrate-io/updated_travis

Updated travis test definitions.
Improve the error message on unmatched results.

Implements a much better error message when unmatched results are
returned. This will show the Method, URL, Headers, Trailers, and the
Body (truncated to a large but not too large value). This should help
users find out what is going wrong when debugging.
Improve the travis config.
Add a proper location for contacting us
Make sure goveralls is installed.