Add optional repository labels so you can select a repository via "--repository yourlabel" at the command-line (#635).

README.md

@@ -24,9 +24,10 @@ location:
 
     # Paths of local or remote repositories to backup to.
     repositories:
-        - ssh://1234@usw-s001.rsync.net/./backups.borg
-        - ssh://k8pDxu32@k8pDxu32.repo.borgbase.com/./repo
-        - /var/lib/backups/local.borg
+        - path: ssh://k8pDxu32@k8pDxu32.repo.borgbase.com/./repo
+          label: borgbase
+        - path: /var/lib/backups/local.borg
+          label: local
 
 retention:
     # Retention policy for how many backups to keep.