Added purge sub-command to gb vendor command
Added purge sub-command to gb vendor command

mopemope/gb,hyper-carrot/gb,constabulary/gb,tianon/gb,Luit/gb,hyper-carrot/gb,tianon/gb,lparkes/gb,mopemope/gb,URXtech/gb,tbruyelle/gb,inconshreveable/gb,tbruyelle/gb,davidkaya/gb,davidkaya/gb,constabulary/gb,MerlinDMC/gb,guiquanz/gb,constabulary/gb,ches/gb,inconshreveable/gb,acasajus/gb,mopemope/gb,ches/gb