Initial cellml annotation tutorial attempt

The final goal for this tutorial is to continually evolve into an actual comprehensive CellML model annotation tutorial. This initial attempt at a preliminary CellML model annotation tutorial is aimed at the students working on annotating models with biological information over the 2014/2015 summer. I have basically added the entire VPH 2014 tutorial as a submodule and then linked to just the bits that I need to get something ready for the students. This is probably not the best way to do this, but wanting to get the pull request registered to let others take a look and comment.

A better way to develop this would probably be to separate the various VPH tutorial tasks into their own repos and then embed those directly.