[gimp-web/testing] Add GIMP 2.8.18 source code

[Michael Schumacher <schumaml src gnome org>]

commit ada4d1ae32c30cf57132f5cc055d314da39e4863
Author: Michael Schumacher <schumaml gmx de>
Date:   Wed Jul 13 22:51:37 2016 +0200

    Add GIMP 2.8.18 source code

 content/downloads/index.md |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/content/downloads/index.md b/content/downloads/index.md
index 495587c..ba2c70d 100644
--- a/content/downloads/index.md
+++ b/content/downloads/index.md
@@ -8,7 +8,7 @@ Author: Pat David
 </figure>
 
 ## Current Stable Version
-The current stable release of GIMP is **2.8.16** (2015-11-21).
+The current stable release of GIMP is **2.8.18** (2016-07-13).
 
 <div class="OSTEST" markdown="1">
 We think your OS is 
@@ -178,6 +178,9 @@ GIMP 2.8.16 is now available at [http://download.gimp.org/mirror/pub/gimp/v2.8/]
 
 To allow you to check the integrity of the tarballs, here are the MD5 sums of the latest releases:
 
+**gimp-2.8.18.tar.bz2**
+<kbd>5adaa11a68bc8a42bb2c778fee4d389c</kbd>
+
 **gimp-2.8.16.tar.bz2**  
 <kbd>30e0a1b7c18b0e3415f4ac54567252ac</kbd>