README says to set up a bridge with `new`, but the correct command appears to be `configure`

Hi there,

just setting up this project and following the README guide, I hit the following snag. It says to add a bridge with

git bug bridge new

however, that yields:

Error: unknown command "new" for "git-bug bridge"

Using the --help option, it appears that the correct sub-command is configure, and indeed, that works. I'd started a pull request fixing the README, but I thought maybe this a discrepancy between the state of the code and the release, so I figured I tell you here

Cheerz, and cool project :)