Merge pull request #2 from Ivoah/master

Added "begin()" function, added example, and renamed demos folder
Skeleton of CBL2 emulation class
Rudiments of a callback-based system for emulating the CBL2; bug fixes
Added message state machine components for calc->CBL2 data transfers
Added message state machine components for CBL2->calc data transfers
Added ability to dump verbose packet information, documentation about that