[evolution] Add comment about signature delimiter

[Andre Klapper <aklapper src gnome org>]

commit cf6b6ccc2055fcae41f26dfbe2dada2ff943de50
Author: Andre Klapper <a9016009 gmx de>
Date:   Mon Mar 9 00:58:55 2015 +0100

    Add comment about signature delimiter

 help/C/mail-composer-mail-signatures.page |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/help/C/mail-composer-mail-signatures.page b/help/C/mail-composer-mail-signatures.page
index d3d65a6..146751e 100644
--- a/help/C/mail-composer-mail-signatures.page
+++ b/help/C/mail-composer-mail-signatures.page
@@ -6,7 +6,7 @@
     
     <link type="guide" xref="index#mail-composing" />
 
-    <revision pkgversion="3.0.2" version="0.2" date="2011-07-30" status="final"/>
+    <revision pkgversion="3.13.90" version="0.3" date="2015-03-09" status="final"/>
     <credit type="author">
       <name its:translate="no">Andre Klapper</name>
       <email its:translate="no">ak-47 gmx net</email>
@@ -24,3 +24,4 @@
 <note style="tip"><p>The term "signature" is also differently used in terms of <link 
xref="mail-encryption">encryption</link>.</p></note>
 </page>
 
+<!-- TODO: The two dashes and a space signature delimiter can be disabled via dconf in 
org.gnome.evolution.mail.composer-no-signature.delim but don't really want to advertise that -->