Very primitive first implementation of code complete

- Use Presentation compiler to offer basic code complete back-end functionality
- Add setupReplClassPath sbt task, necessary for the Presentation compiler to work
- Add specs dependency to scalaEval project in order to start testing it
- Change api of eval to avoid needless string manipulation
Upgrade from specs2 2.2.2 to 2.2.3
Merge pull request #10 from jedesah/develop

Very primitive first implementation of code complete