[gimp-web/testing] Add null image type and description.

[Ed J <edj src gnome org>]

commit 1c0871b01bf09e0163fdd9691778d1d533f77e2e
Author: Ed J <edj src gnome org>
Date:   Fri May 2 19:45:23 2014 +0100

    Add null image type and description.

 tutorials/Basic_Perl/index.htrw |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/tutorials/Basic_Perl/index.htrw b/tutorials/Basic_Perl/index.htrw
index 62cfd8e..93757b7 100644
--- a/tutorials/Basic_Perl/index.htrw
+++ b/tutorials/Basic_Perl/index.htrw
@@ -253,6 +253,11 @@ script_fu_basic1_logo("Hello", 72,
                <tr><td bgcolor=#101010 valign=top>RGB <td bgcolor=#101010 valign=top>RGB images</tr>
                <tr><td bgcolor=#101010 valign=top>RGBA <td bgcolor=#101010 valign=top>RGB images with alpha 
channels</tr>
                <tr><td bgcolor=#101010 valign=top>GREY <td bgcolor=#101010 valign=top>Grey level images</tr>
+               <tr><td bgcolor=#101010 valign=top> <td bgcolor=#101010
+               valign=top>(left empty or no such section) Does
+               not take image as input, <b>does</b> return an
+               image. <tt>Gimp::Fu</tt> will automatically add that
+               return value.</tr>
             </table>
     </LI><p>
     <LI> Parameters, from the <tt>PARAMETERS</tt> section. This will be