jruby/warbler — pull request #221 by mje113 (2013-11-26 20:16:39+00:00)
Title: Adding WEB-INF to $LOAD_PATH for simple Rack-only apps

Quick stab at fixing:
https://github.com/jruby/warbler/issues/220

Not sure if this is the right approach, but it works for me in my case.