Rename of Riemann master branch to main

[James Turnbull]

Hi all

As an FYI I’ve renamed the master branch in the Riemann repository to main.

https://github.com/riemann/riemann/tree/main

To rename your local environment:

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

Thanks

James Turnbull