update comments
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/org/cloudbus/cloudsim/examples/power/planetlab/vmTuning.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/org/cloudbus/cloudsim/examples/power/planetlab/vmTuning.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/org/cloudbus/cloudsim/examples/power/planetlab/vmTuning.java