update README

Change-Id: I3cb3e63fada40dc95388a2fb47f2f587269194ca
Downloading app fails with nginx 405 Not Allowed

When downloading an app with GET /apps/:name/application fails with
nginx 405 Not Allowed due to bad route in nginx cc conf.

Change-Id: I32fa1d11231316c4ce0ff3746292f668ec5086ec
FIX chef dependency problem,
installing net-ssh and net-ssh-gateway first
Merge pull request #225 from gramos/fix-net-ssh-dependency-error

* fix-net-ssh-dependency-error:
  FIX chef dependency problem, installing net-ssh and net-ssh-gateway first
Update README.md
Add uaa and uaadb to multihost installation configs