[gnome-user-docs] Add a section about the Application Menu in the introduction

[Baptiste Mille-Mathias <baptistem src gnome org>]

commit a7070ba6911e905f5b001458817f11fbf107b027
Author: Baptiste Mille-Mathias <baptiste millemathias gmail com>
Date:   Mon Jan 27 14:11:20 2014 +0000

    Add a section about the Application Menu in the introduction
    
    The section describes briefly the Application Menu role and provides
    2 screenshots, one for shell and one for classic sessions.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=723101

 gnome-help/C/figures/shell-appmenu-classic.png |  Bin 0 -> 15307 bytes
 gnome-help/C/figures/shell-appmenu-shell.png   |  Bin 0 -> 15296 bytes
 gnome-help/C/shell-introduction.page           |   25 ++++++++++++++++++++++++
 3 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/gnome-help/C/figures/shell-appmenu-classic.png b/gnome-help/C/figures/shell-appmenu-classic.png
new file mode 100644
index 0000000..a940924
Binary files /dev/null and b/gnome-help/C/figures/shell-appmenu-classic.png differ
diff --git a/gnome-help/C/figures/shell-appmenu-shell.png b/gnome-help/C/figures/shell-appmenu-shell.png
new file mode 100644
index 0000000..de72019
Binary files /dev/null and b/gnome-help/C/figures/shell-appmenu-shell.png differ
diff --git a/gnome-help/C/shell-introduction.page b/gnome-help/C/shell-introduction.page
index 256141b..0bbda13 100644
--- a/gnome-help/C/shell-introduction.page
+++ b/gnome-help/C/shell-introduction.page
@@ -126,6 +126,31 @@
 
 </section>
 
+<section id="appmenu">
+  <title>Application menu</title>
+  <if:choose>
+    <if:when test="!platform:gnome-classic">
+      <media type="image" src="figures/shell-appmenu-shell.png" width="137"
+      height="132" style="floatend floatright" if:test="!target:mobile">
+        <p>App Menu of <app>Terminal</app></p>
+      </media>
+    </if:when>
+    <if:when test="platform:gnome-classic">
+      <media type="image" src="figures/shell-appmenu-classic.png" width="154"
+      height="133" style="floatend floatright" if:test="!target:mobile">
+        <p>App Menu of <app>Terminal</app></p>
+      </media>
+    </if:when>
+  </if:choose>
+
+  <p>Application menu, located beside the <gui>Activities</gui> button shows the name
+  of the active application alongside with its icon and provides quick access to
+  application preferences or help. The items that are available in the
+  application menu vary depending on the application although you will always
+  find <gui>Quit</gui> there.</p>
+
+</section>
+
 <section id="clock">
   <title>Clock, calendar &amp; appointments</title>