Fix typo in mock README.md
Load v2 cartridges from isolated location
Use mock Cartridge instance in tests
Add note for V2 cart locations
Merge pull request #45 from pmorie/dev/cartridge_refactor

Initial work for isolated v2 carts
WIP Cartridge Refactor - Added functional tests for lock/unlock
Merge pull request #46 from jwhonce/dev/wip

WIP Cartridge Refactor - Added functional tests for lock/unlock
Test refactor and stdout NodeLogger support