Added command line options for specifying number of concurrent clients, as well as hatch rate of the clients.
Added command line options for specifying number of concurrent clients, as well as hatch rate of the clients.

timaakulich/locust,heyman/locust,Diogo-Costa/locust,agoragames/locust,locustio/locust,yangchaogit/locust,noif/locust,fengshao0907/locust,ismail-s/locust,pan1cz/locust,kentzzhang/locust,harrisonfeng/locust,RollForReflex/locust,wndhydrnt/locust,jacobgardner/locust,cpennington/locust,edx/locust,santiavenda2/locust,cloudant/locust,leo23/locust,jaume-pinyol/locust,cloudant/locust,wndhydrnt/locust,agoragames/locust,moongtaeng/locust,fengshao0907/locust,cpennington/locust,yangchaogit/locust,pmdarrow/locust,cgoldberg/locust,pmdarrow/locust,Diogo-Costa/locust,TZer0/locust,normanb/locust,dmoliveira/locust,dmoliveira/locust,nagyistoce/locust,wndhydrnt/locust,kentzzhang/locust,dmoliveira/locust,rackerlabs/locust,leo23/locust,harrisonfeng/locust,bugsduggan/locust,bugsduggan/locust,normanb/locust,doctoryes/locust,rohitgup14/locust,leo23/locust,cpennington/locust,edx/locust,lixar/locust,kentzzhang/locust,donglei/locust,edx/locust,cloudant/locust,kyroskoh/locust,liubq919/locust,TZer0/locust,mbeacom/locust,jacobgardner/locust,bugsduggan/locust,jaume-pinyol/locust,leo23/locust,jaume-pinyol/locust,mbeacom/locust,jacobgardner/locust,nagyistoce/locust,pmdarrow/locust,donglei/locust,fengshao0907/locust,yangchaogit/locust,pan1cz/locust,cgoldberg/locust,armersong/locust,donglei/locust,pglass/locust,fordhurley/locust,noif/locust,scalp42/locust,lixar/locust,armersong/locust,minhoryang/locust,mbeacom/locust,doctoryes/locust,mbeacom/locust,RollForReflex/locust,moongtaeng/locust,dmoliveira/locust,ismail-s/locust,yangchaogit/locust,lixar/locust,locustio/locust,edx/locust,fordhurley/locust,timaakulich/locust,timaakulich/locust,minhoryang/locust,rohitgup14/locust,armersong/locust,fengshao0907/locust,ismail-s/locust,cloudant/locust,TZer0/locust,agoragames/locust,nagyistoce/locust,santiavenda2/locust,fordhurley/locust,Diogo-Costa/locust,pan1cz/locust,cgoldberg/locust,rohitgup14/locust,doctoryes/locust,scalp42/locust,noif/locust,RollForReflex/locust,moongtaeng/locust,rackerlabs/locust,kentzzhang/locust,kyroskoh/locust,locustio/locust,rackerlabs/locust,cpennington/locust,moongtaeng/locust,wndhydrnt/locust,rohitgup14/locust,santiavenda2/locust,liubq919/locust,kyroskoh/locust,Diogo-Costa/locust,liubq919/locust,pglass/locust,minhoryang/locust,scalp42/locust,doctoryes/locust,noif/locust,normanb/locust,armersong/locust,locustio/locust,lixar/locust,harrisonfeng/locust,donglei/locust,RollForReflex/locust,pglass/locust