Add an example for using the claim and release
Add an example for using the claim and release

It took me a couple reads through the docs and a lot of experimentation
to get it right, so provide an example to help avoid confusion.

Signed-off-by: Sean M. Collins <d7e19930cc1f42c2d0781f4d9e6f1fe5891bf9cf@coreitpro.com>

concourse/pool-resource,concourse/pool-resource