Update documentation on the hypervisor module "vm".
Update documentation on the hypervisor module "c7200".
Update documentation on the hypervisor module "c3600".
Add documentation on the hypervisor module "c3745".
Add documentation on the hypervisor module "c3725".
Add documentation on the hypervisor module "c2691".
Add documentation on the hypervisor module "c2600".
Add documentation on the hypervisor module "c1700".
Update documentation.

Closes issue #22 - Hypervisor documentation is out of date
(see previous commits)