Refactored a bit. More wise code.
Minor updates in logging.
Update in tools.
Small update. Minor ..
Minor update. Simplified controller/reactor_cmd_executor.
Minor update. Simplified controller/reactor_cmd_executor.
Minor.
Minor.
Refactoring ..........
Refactored and simplified. Meet IOLoop and Controller. Removed excessive exceptions.
Merge pull request #41 from artem-v/AddSupervisor-3attempt

Add supervisor 3attempt