*: rename master branch to main

Author: bgilbert

.github/workflows/containers.yml

@@ -3,9 +3,9 @@ name: Containers
 
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
 
 env:
   GO_TOOLCHAIN: "1.15"

.github/workflows/go.yml

@@ -2,9 +2,9 @@
 name: Go
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
 
 env:
   # Minimum supported Go toolchain

CONTRIBUTING.md

@@ -31,7 +31,7 @@ are very busy and read the mailing lists.
 
 This is a rough outline of what a contributor's workflow looks like:
 
-- Create a topic branch from where you want to base your work (usually master).
+- Create a topic branch from where you want to base your work (usually main).
 - Make commits of logical units.
 - Make sure your commit messages are in the proper format (see below).
 - Push your changes to a topic branch in your fork of the repository.

README.md

@@ -19,7 +19,7 @@ Go bindings to systemd. The project has several packages:
 
 An example HTTP server using socket activation can be quickly set up by following this README on a Linux machine running systemd:
 
-https://github.com/coreos/go-systemd/tree/master/examples/activation/httpserver
+https://github.com/coreos/go-systemd/tree/main/examples/activation/httpserver
 
 ## systemd Service Notification