Add dummy web server as an example.

John, I wanted to finish this today.  I didn't have time/know how to link it up to your logic so you will need to add that.  You can run the web server with `sbt run` or `sbt run-main edu.knowitall.tac2013.findSlotFillersApp.FindSlotFillsServer`.  Unless you specify an alternate port it will use `8080`.  Go to `localhost:8080` and enter text into the fields.  You will see them printed out after you click "Submit".