Working!

* Well, tests are running and that sort of thing.
* Added .Run method to AppDomainRunner, as the serialization problem was
  due to the fact that I was calling runner.Gib which was returning a
  Task, and *that return value* was what was not being able to be
  serialized.

Signed-off-by: William Raiford <bill.mybiz@gmail.com>