Added a testing xml file for tomorrow
Merge pull request #42 from MorenoB/Test_enviroment

Added a testing xml file for tomorrow
Giant commit that fixes many back-end flaws
Added documentation
Huge, atrocious commit that changes the way transporters are created
Added IDs to containerHolders
Added ArriveMessage and updated CreateMessage
Added method of queuing arrival of transporters to Controller
Added documentation
Merge pull request #44 from Rubykuby/arrivemessage

Implemented queuing arrival of transporters
Added a way of tracking what message is currently being processed by actors
Split up long line
Cleaned up Controller.
Reformatted Controller