Add metainfo.xml to support Gnome Software Centere

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Gimp Paint Studio is not visible on Gnome Software Center
2.
3.

What is the expected output? What do you see instead?
Gimp Paint Studio will be displayed on appstream supported app store like Gnome 
Software Center

What version of the product are you using? On what operating system?
2.0

Please provide any additional information below.
The metainfo is attached and ready to use. You can edit it if you need to 
update the information and it takes very little space (less than 1kb in size). 
The benefit is huge because it will allow an ease of installation not only for 
Gnome Software but also other app store like Ubuntu Software Center.
You can read more information on 
http://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#sect-Metad
ata-GenericComponent about Appstream
and 
http://www.freedesktop.org/software/appstream/docs/sect-Metadata-Addon.html 
about add-on

Original issue reported on code.google.com by tshim...@gmail.com on 2 Feb 2015 at 6:08

Attachments:

• gimp-paint-studio.metainfo.xml

[GoogleCodeExporter]

Here is another guideline for the metainfo.xml
http://www.freedesktop.org/software/appstream/docs/sect-Quickstart-Addons.html

Original comment by tshim...@gmail.com on 3 Feb 2015 at 7:11