Updated Autofac dependency to 3.0.2

I have updated Autofac to the 3.0 package. The version number used in the package.config is 3.0.2 but the actual assembly version referenced by the project is 3.0.0.0. This is because the assembly version has been locked at 3.0.0.0, while the file and package versions for Autofac are incremented to avoid strong naming issues.