git: Set the default branch to master

I've always loved how the master branch is called master since it's
comparable to mastering a skill or emphasizing the importance of
something.

git/.gitconfig

@@ -20,6 +20,9 @@
 [branch]
     autosetuprebase = always
 
+[init]
+	defaultBranch = master
+
 [rerere]
     enabled = true