[polari/gnome-3-26] appdata: Add release notes for 3.26.2

[Gitlab Administrative User <gitlab src gnome org>]

commit 92467cf1a8d5820729e335d40f6fcbf964ea8b04
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Oct 30 20:10:54 2017 +0100

    appdata: Add release notes for 3.26.2

 data/appdata/org.gnome.Polari.appdata.xml.in | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/data/appdata/org.gnome.Polari.appdata.xml.in b/data/appdata/org.gnome.Polari.appdata.xml.in
index 34b6537..07ad2bf 100644
--- a/data/appdata/org.gnome.Polari.appdata.xml.in
+++ b/data/appdata/org.gnome.Polari.appdata.xml.in
@@ -52,6 +52,14 @@
   </kudos>
   <translation type="gettext">polari</translation>
   <releases>
+    <release version="3.26.2" date="2017-10-30">
+      <description>
+        <p>
+           The second update for GNOME 3.26 improves the performance of
+           room list in the join dialog and fixes various minor bugs.
+        </p>
+      </description>
+    </release>
     <release version="3.26.1" date="2017-10-04">
       <description>
         <p>