Merge pull request #1 from dmoranj/examples

Examples
Add resource owner headers to the token
Add client headers to the proxied request
Create Client Credentials Sample application
Merge branch 'master' of github.com:dmoranj/oAuThor into examples
Allow proxied applications to have public resources
Merge branch 'master' into examples
Client Credentials example: initial registration in Auth Server and Resource Server
Client credentials example: implement resource acquiring