[gimp-web/downloads-templated] Add some text to downloads/index.md to direct people to template

[Pat David <patdavid src gnome org>]

commit 3a72a18df658069c950250d8eb16bbdcca60ffe0
Author: Pat David <patdavid gmail com>
Date:   Wed Jul 20 16:14:40 2016 -0500

    Add some text to downloads/index.md to direct people to template
    
    Add some text to point folks wanting to modify the text of
    downloads/ to edit the template file instead of the markdown.

 content/downloads/index.md |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/content/downloads/index.md b/content/downloads/index.md
index 348ccd7..93cb203 100644
--- a/content/downloads/index.md
+++ b/content/downloads/index.md
@@ -7,4 +7,9 @@ GIMP_VERSION_STABLE_WINDOWS: 2.8.18
 GIMP_VERSION_STABLE_POSTFIX_MACOS: -1
 GIMP_VERSION_STABLE_POSTFIX_WINDOWS: 
 
-Yadda yadda yadda.
+The actual page content for /downloads/ has been moved into its own template
+file at `./themes/newgimp/templates/downloads/html`.  This is so we can now
+use Jinja variables on the page such as the ones defined above: GIMP_VERSION_*.
+
+If you want to edit the text of the /downloads/ page, please see the above
+template file.