I just published the final version of SpecsFor.Mvc 3.0.0.  As I mentioned previously, this update adds support for MVC 5.0, drops the dependency on MVCContrib and Rhino Mocks, and includes a handful of other fixes.  Next on the SpecsFor.Mvc agenda is improving the initial setup experience and eliminating pain around lingering IIS Express and Selenium processes.  In the meantime, please let me know if you run into any problems with SpecsFor.Mvc via the Github project page.