Separate Working Examples out to their own Project

[decapo01]

I had a tough time getting the computer database example to run. I've seen 2 issues about this one here #427 and one here #374 it would be nice (especially as new comers to Scala and the Play framework) to see working examples in their own project to hack around with and understand. I've already got a separate computer database example running here.

[gmethvin]

Thanks for helping out here. I think it makes sense to move each example to its own repository, like we've done with https://github.com/playframework/play-scala-slick-example.

We could move your example to https://github.com/playframework/play-scala-slick-computer-database-example, and you could submit a PR to remove it here. Then we can add it to our templatecontrol script so we can automatically update the dependencies for Play and Slick when we do releases.

[decapo01]

Ok, I'll submit the PR over the weekend and try to add a better read me to the computer database example.