Updated readme to show the new Compute bindings.
Moved the personality check before the rest of the code. The idea is that we should fail fast rather than actually try to make a request we later can't fulfill.
Docstrings about the RebootServer.
Put a http.Client on the Access type, this is so we both don't have to make one each time we make a request and so that we can mock it easily.
Added some initial compute tests.