title: Field benchmarkRun must implement MethodRule
body: <p>I now want to add junit benchmark to my alreadyexisting junit testclasses.I use junit 4.10.I added junit benchmark 0.7.2. When I try running a testclass, it shows java.lang.Exception: Field benchmarkRun must implement MethodRule. How to fix this? I thought junit 4.10 would have MethodRule as deprecated.</p>