[easytag] Add AppData metainfo file for Nautilus extension

[David King <davidk src gnome org>]

commit 7ef0e7569cb0108debe6bac95cd7ece1ac39f3a6
Author: David King <amigadave amigadave com>
Date:   Fri Oct 31 23:09:51 2014 +0000

    Add AppData metainfo file for Nautilus extension

 .gitignore                            |    1 +
 Makefile.am                           |    4 ++--
 data/easytag-nautilus.metainfo.xml.in |   12 ++++++++++++
 po/POTFILES.in                        |    1 +
 4 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 767dc12..3cb339d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ config.status
 configure
 /data/easytag.appdata.valid
 /data/easytag.appdata.xml
+/data/easytag-nautilus.metainfo.xml
 /data/easytag.desktop
 /doc/easytag.1
 /doc/version.xml
diff --git a/Makefile.am b/Makefile.am
index ef45dc9..4c1a261 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -254,8 +254,8 @@ endif
 
 @APPDATA_XML_RULES@
 @INTLTOOL_XML_RULE@
-appdata_in_files = data/easytag.appdata.xml.in
-appdata_XML = $(appdata_in_files:.appdata.xml.in=.appdata.xml)
+appdata_in_files = data/easytag.appdata.xml.in data/easytag-nautilus.metainfo.xml.in
+appdata_XML = $(appdata_in_files:.xml.in=.xml)
 
 @INTLTOOL_DESKTOP_RULE@
 desktopdir = $(datadir)/applications
diff --git a/data/easytag-nautilus.metainfo.xml.in b/data/easytag-nautilus.metainfo.xml.in
new file mode 100644
index 0000000..bea41f2
--- /dev/null
+++ b/data/easytag-nautilus.metainfo.xml.in
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2014 David King <amigadave amigadave com> -->
+<component type="addon">
+    <id>easytag-nautilus</id>
+    <extends>org.gnome.Nautilus.desktop</extends>
+    <_name>Open with EasyTAG</_name>
+    <_summary>Open directories and audio files with EasyTAG using the context menu</_summary>
+    <url type="homepage">https://wiki.gnome.org/Apps/EasyTAG</url>
+    <metadata_license>CC0-1.0</metadata_license>
+    <project_license>GPL-3.0+</project_license>
+    <updatecontact>amigadave amigadave com</updatecontact>
+</component>
diff --git a/po/POTFILES.in b/po/POTFILES.in
index ba1f9ac..195bbf3 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,5 +1,6 @@
 data/easytag.appdata.xml.in
 data/easytag.desktop.in
+data/easytag-nautilus.metainfo.xml.in
 [type: gettext/glade]data/browser.ui
 [type: gettext/glade]data/cddb_dialog.ui
 [type: gettext/glade]data/file_area.ui