Scala Shell

I've recently been working on a new side project - scala-shell. As one might guess, this is a shell written in Scala. The idea behind this side project is to help further my Scala knowledge and dive into some more advanced topics such as:

• Creating a GUI
• Files and directories
• Parsing user input
• Processes
• Packaging using sbt

I haven't had a lot of time to work on scala-shell, however I currently have the following items completed:

• Creating a GUI
• Packaging using sbt
• Parsing user input
• A few basic commands
• exit
• pwd
• ls
• Printing an error on invalid input

I realize that there's still a long ways to go to make this a "usable" shell, however I feel that it's coming along quite nicely and am happy with my current progress.