Allow ContosoUniversity to run from initial build

[klabranche]

Jimmy,

Great job on a sample showing how to keep ASP.NET MVC clean and mean! I had issues running it out of the gate so I created this PR.

I uncommented the EF CF initializer in the web.config to allow it to run and updated the seed method to include instructors and departments. Without this, the initial database build throws a Foreign Key violation.

I also fixed issues #2 & #5 and adds a note for #6.
#2 - I repointed HtmlTags to version 3.0.0.186 #5 - I added into the tools folder the roundhouse.dll and roundhouse.databases.sqlserver.dll #6 - I added a note to the readme file about the connection string.

I also added a note on the integration tests using roundhouse but not necessary for just running the sample application as well as a note for using build.bat.