Changes

[http://zenit.senecac.on.ca/wiki/index.php/Fedora_Arm_Secondary_Architecture/Koji_Certificates How to get koji certificate?]

[http://fedoraproject.org/wiki/Koji How To Setting up and Using Koji on Fedora]

[http://developer.postgresql.org/pgdocs/postgres/intro-whatis.html What is PostgreSQL?]