[banshee] README.releasing: clarify how to run make-release to get the username

[Andrés Aragoneses <aaragoneses src gnome org>]

commit 057f043875a7d7c677b3db67f4a66990b5b34431
Author: Andres G. Aragoneses <knocte gmail com>
Date:   Mon Apr 15 23:25:45 2013 +0100

    README.releasing: clarify how to run make-release to get the username

 extras/README.releasing | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/extras/README.releasing b/extras/README.releasing
index 138d943..ecf3ee6 100644
--- a/extras/README.releasing
+++ b/extras/README.releasing
@@ -11,6 +11,7 @@ Pre-release:
 
 Release:
 * Run the `extras/make-release` script (from extras/ directory)
+  specifying your gnome username with the env var GNOME_FTP_USER.
   + Note that this makes the tag, adds the version to bugzilla,
     and uploads the tarballs. You need to ssh to master.gnome.org to
     install the tarballs on ftp.gnome.org.