Explain purpose of helper script

Author: platisd

verify_commit_messages_in_branch.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# A helper script to verify the messages of every commit in
+# the current branch when compared against `origin/master`.
+# If there is no difference then the latest commit will be used.
 set -eu
 
 commits_since_master=$(git rev-list HEAD ^origin/master)