Add upstream metadata.

Author: sebastic

debian/upstream/metadata

@@ -0,0 +1,10 @@
+---
+Bug-Database: http://hub.qgis.org/projects/quantum-gis/issues
+Bug-Submit: http://hub.qgis.org/projects/quantum-gis/issues/new
+Contact: qgis-developer@lists.osgeo.org
+Donation: http://qgis.org/en/site/getinvolved/donations.html
+Name: QGIS
+Registration: https://www2.osgeo.org/cgi-bin/ldap_create_user.py
+Repository: https://github.com/qgis/QGIS.git
+Repository-Browse: https://github.com/qgis/QGIS
+Screenshots: http://qgis.org/en/site/about/screenshots.html