So I read trough the answers and still had the same problem. I resolved it as follows.
Added "jetty-web.xml" to the "WEB-INF" folder. Thus:
src/main/webapp/WEB-INF/jetty-web.xml
The content of the jetty-web.xml is:
/YourEndpoint
My rest is now available at:
http://localhost:8080/YourEndpoint/webresources/someMethod
Hope this helps someone out there.