 Merging in pull request #11  Clean graph.py up, this results in no functional changes
 Merging in pull request #11
 Clean graph.py up, this results in no functional changes

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