Merge pull request #2 from cemmersb/master

Hi,

please merge the latest sources into your base since I've done some fixes on:

* Eval test case
* Dynamic endpoint configuration
* Static configuration

The behavior is now as follows
(1) You may configure an operation via the endpoint as specified
(2) In case you supply a header, the header operation overwrites the original configuration

I'm not quite sure if we should leave it this way, but I guess that this would provide a good flexibility.

Best regards,

- Christoph