Task for running all the tests.
Generalized the client stubs for  pluggable backends

In order to keep Beefcake sane and agnostic to service backends, I'm
introducing a pluggable backend such that client stubs can be used with
anything you're willing to hack on.

An example client backend is available here:
https://github.com/bradhe/beefcake_go_rpcgen

Fix a broken test.

Generalize the service client backends.

In order to allow other users to develop their own backends, the
existing implementation has been generalized. Now, you can
quickly/easily plug in your own workflow.

Woops, that's just silly!

Class and module names must be constantized.