Netflix/feign — pull request #19 by adriancole (2013-07-14 22:42:15+00:00)
Title: fix duplicate binding error using jaxrs

fixes error like:
```
16:05:43.784 [DEBUG] [TestEventLogger] java.lang.IllegalArgumentException: Duplicate:
16:05:43.784 [DEBUG] [TestEventLogger] ContractProvidesAdapter[provideKey="feign.Contract", memberskey="null"]
```
cc @rdegnan