projects.apache.org DOAP file added for Sling

[Bertrand Delacretaz]

Hi,

I have created a DOAP file at
http://svn.apache.org/repos/asf/sling/site/doap/sling-doap.rdf to have
Sling appear at http://projects.apache.org/

Added to projects/files.xml,
http://svn.apache.org/viewvc?view=revision&revision=939717

-Bertrand