allow --nodb to work with version check
allow --nodb to work with version check

tjjalava/mongo-hacker,vorou/mongo-hacker,AustenLR/mongo-hacker,vaelen/mongo-hacker,digitalartcrew/mongo-hacker,pvdb/mongo-hacker,TylerBrock/mongo-hacker,hhzplst/mongo-hacker,hristozov/mongo-hacker,bradparks/mongo-hacker,Cog-g/mongo-hacker,stennie/mongo-hacker