You've got a fresh app and you're almost ready to get started. Firstly, you'll need to configure your VoIP platform:
Edit extensions.conf to include the following:
[your_context_name]
exten => _.,1,AGI(agi:async)
and setup a user in manager.conf with read/write access to all.
Install the rayo-server app into PRISM 11 and follow the configuration guide.
In config/adhearsion.rb you'll need to set the VoIP platform you're using, along with the correct credentials. You'll find example config there, so follow the comments.
Start your new app with "ahn start /path/to/your/app". You'll get a lovely console and should be presented with the SimonGame
Check out the Adhearsion website for more details of where to go from here.