Removing the dinosaur get-to-know-you question.

We used the dinosaur intro question in a previous class, so we'd
like to have the flexibility to choose something different on the
fly for this class.
Removing dino file, per prev removal of get-to-know-you question.
Merge pull request #2 from rachelthompson/skip-dinosaur

Removing the dinosaur get-to-know-you question.