Explicit action names

Hi

Nice work on the role. I would think explicit action names would be better.
Merge pull request #4 from piotrze/master

Add support for apache proxy
Supports apache proxy.
Fix the role.
Merge pull request #1 from homburg/patch-1

Explicit action names
Use jenkins key id to avoid request (c) homburg
Add jenkins_proxy_port.
Fix readme.
fix typo in docs