Added Nimrod jester framework.

Hopefully everything is in the right place.

I was not sure how to install the actual framework so I just decided to copy it into the jester directory, this assumes that the installer's current working directory is in the root of this git repo. I was not able to properly test this as ./run-tests.py seems to require an ssh login to a different machine among other things, so I just ran the commands manually and tested that way.