Tests pass with Robots using @druid instance variable
Use #perform method with druid passed in instead of #process_item with @druid
Get rid of specs that weren't testing anything
Mix in LyberCore::Robot instead of deriving from parent class
Get rid of demo robots
Introduce robot-controller and new lyber-core gems

- Add config/environments files and run directory
- Modify Rakefile to comply with new robot-controller
Modify robots to follow new mix-in and naming convention
Version bump to 1.13.0