Add Xirby's Dreamland to Game Library Request

Short, simple game with introduction sequence, hand drawn graphics, and self composed Arduino music. 

Organization could be better, but I wanted to only spend a short time on these as a quick summer side project.

I decided to work on this just this weekend after finding my Thumby in my couch- This thing has survived the wash machine and dry cycle! I'm very impressed by how hardy it is after all of this time. The battery , port, and buttons still work great, but the speaker went out after being drenched in water. I am tempted to buy another one. 

Thank You!