Updating bash_completion script to work with new --help output formatting.
Updating bash_completion script to work with new --help output formatting.

imjerrybao/grunt,thejameskyle/grunt,Chhunlong/grunt,r14r-work/fork_grunt_master,yonglehou/grunt,FeodorFitsner/grunt,arosa81/grunt,IveWong/grunt,paladox/grunt,shama/grunt,goodeggs/grunt,felixgrey/grunt,paulcbetts/grunt,eelve/grunt,abraheem/grunt,zackexplosion/grunt,r14r/fork_grunt_master,yosiazwan/grunt,thecc4re/gruntjs,JaKXz/grunt,ThiagoGarciaAlves/grunt,q310550690/grunt,vladikoff/grunt,lkiarest/grunt,coldrye-collaboration/grunt,yuhualingfeng/grunt,youmyyou/grunt,modulexcite/grunt,pandeysoni/grunt,fscherwi/grunt