Comment #2 on issue 650 by pekka.klarck: Robot Framework 2.5.3 cannot be extended using `jar` command
http://code.google.com/p/robotframework/issues/detail?id=650
A part of this issue is changing the instructions on the JavaIntegration wiki page to use `jar` and not `zip`. With a note that the former only works with 2.5.4, of course.
