Fixed typo in the quickstart doc. 
Fixed typo in the quickstart doc. 

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