README: fixing some typoes
README: fixing some typoes

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