Tfssupport

This will add TFS support to warmup.
- It leverages the TeamFoundation namespace installed via 2 Nuget packages
- Set the TFS server in the app.config
- On the command line give the fully qualified server address of the template, as you would from the '$' token
- It creates a temporary workspace, does a get latest, checks out the files, project wide un-binding, then deletes the temporary workspace

The regular warmup flow takes care of the rest.