Added Contoso University MVC5 sample
Modified Contoso to use Autofac and StudentController to use a repository
Removed IDependencyScope and IDisposable from SpecifcationFor

Instead the SpecificationContext is disposed by the IoC container
Renamed IDependencyScope/Resolver to IDependencyResolver/ITestContainer to make concepts more explicit
Made DependencyResolver configurable
Added some sample unit tests

for StudentController Details action.
Created samples acceptance test project
Added ControllerScenario to acceptance tests project
Refactored EF migrations code
added first functional test