Update documents to include information about using a configuration file. Also update the formating on the usage section to allow the discriptions to wrap. Before wrap it was necessary to scroll left and right to read them.
Update documents to include information about using a configuration file. Also update the formating on the usage section to allow the discriptions to wrap. Before wrap it was necessary to scroll left and right to read them.

baptistedonaux/docker-gen,jwilder/docker-gen,appropriate/docker-gen