revent.py: Adding more comments
revent.py: Adding more comments

jacobq/csci5221-viro-project,diogommartins/pox,diogommartins/pox,kavitshah8/SDNDeveloper,carlye566/IoT-POX,MurphyMc/pox,noxrepo/pox,jacobq/csci5221-viro-project,noxrepo/pox,VamsikrishnaNallabothu/pox,MurphyMc/pox,kavitshah8/SDNDeveloper,xAKLx/pox,kpengboy/pox-exercise,waltznetworks/pox,MurphyMc/pox,carlye566/IoT-POX,waltznetworks/pox,VamsikrishnaNallabothu/pox,diogommartins/pox,chenyuntc/pox,xAKLx/pox,xAKLx/pox,denovogroup/pox,xAKLx/pox,VamsikrishnaNallabothu/pox,denovogroup/pox,pthien92/sdn,kulawczukmarcin/mypox,MurphyMc/pox,chenyuntc/pox,kavitshah8/SDNDeveloper,adusia/pox,MurphyMc/pox,adusia/pox,pthien92/sdn,diogommartins/pox,chenyuntc/pox,andiwundsam/_of_normalize,noxrepo/pox,chenyuntc/pox,pthien92/sdn,adusia/pox,adusia/pox,PrincetonUniversity/pox,jacobq/csci5221-viro-project,PrincetonUniversity/pox,kpengboy/pox-exercise,jacobq/csci5221-viro-project,kpengboy/pox-exercise,andiwundsam/_of_normalize,pthien92/sdn,kulawczukmarcin/mypox,pthien92/sdn,xAKLx/pox,VamsikrishnaNallabothu/pox,waltznetworks/pox,kpengboy/pox-exercise,denovogroup/pox,andiwundsam/_of_normalize,jacobq/csci5221-viro-project,denovogroup/pox,denovogroup/pox,carlye566/IoT-POX,kulawczukmarcin/mypox,waltznetworks/pox,kavitshah8/SDNDeveloper,chenyuntc/pox,andiwundsam/_of_normalize,PrincetonUniversity/pox,noxrepo/pox,kpengboy/pox-exercise,diogommartins/pox,kulawczukmarcin/mypox,kulawczukmarcin/mypox,carlye566/IoT-POX,VamsikrishnaNallabothu/pox,carlye566/IoT-POX,PrincetonUniversity/pox,adusia/pox,waltznetworks/pox,PrincetonUniversity/pox