Delete this class as it was for test purpose.
Fix the bug found by findbugs.
*Previous version: The MessageBusException was not thrown.
Fix the bug found by findbugs
*Previous version: the viriable scan in createNode() method might be
null.
Fix the bug found by findbugs.
Pervious version: sourceNode and sinkNode may be null.
Fix the bug found by findbugs.
*Previous version: The sourceNode, processingNode and sinkNode may be
null.
Merge branch 'master' of
https://github.com/cmusv-sc/Practicum2014-Ericsson-Media.git

Conflicts:
	src/main/java/edu/cmu/mdnsim/messagebus/MessageBusServerWarpImpl.java