https://wiki.jasig.org/display/CASUM/Best+Practice+-+Setting+Up+CAS+Locally+using+the+Maven2+WAR+Overlay+Method
http://www.jasig.org/cas/using-maven
https://github.com/Jasig/cas
https://wiki.jasig.org/display/CASUM/Using+CAS+with+Maven+2+and+Eclipse