Update instructions for fresh deploy of cf

We used to do this using the cf-aws-bootstrap plugin.  That no longer
works, so we've documented a manual deploy procedure using spiff here.

No longer deploys services; the release that the old plugin was
deploying is now deprecated.

Signed-off-by: Abhijit Hiremagalur <abhi@pivotallabs.com>
Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>