[gnome-software] Improve releasing instructions

[Kalev Lember <klember src gnome org>]

commit b14b08f3ea345b7af7b4ef4987985f4c270be158
Author: Kalev Lember <kalevlember gmail com>
Date:   Wed Jul 23 21:19:54 2014 +0200

    Improve releasing instructions
    
    Instead of git-shortlog, use a git-log format that matches better with
    what we need for NEWS.

 RELEASE |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/RELEASE b/RELEASE
index a68ccab..df90e4c 100644
--- a/RELEASE
+++ b/RELEASE
@@ -10,7 +10,7 @@ Released: 2014-xx-xx
 * New Features:
 * Bugfix:
 
-git shortlog GNOME_SOFTWARE_3_13_3.. | grep -i -v trivial | grep -v Merge | uniq > NEWS.new
+git log --format=" - %s (%an)" GNOME_SOFTWARE_3_13_3.. | grep -i -v trivial | grep -v Merge | uniq > NEWS.new
 
 3. Commit changes in gnome-software git: