Revert "README: corrects parameter name for MongoDB directory."
Revert "README: corrects parameter name for MongoDB directory."

This reverts commit cffc29ea6b7bf225b9b7c8c35283a019f1af39a4.

ldrygala/bootzooka,aywengo/bootzooka,ldrygala/bootzooka,softwaremill/bootzooka,ldrygala/bootzooka,aywengo/bootzooka,umitunal/bootzooka,softwaremill/bootzooka,asciiu/fomo,asciiu/fomo,softwaremill/bootzooka,umitunal/bootzooka,aywengo/bootzooka,asciiu/fomo,umitunal/bootzooka