Include Undertow in benchmarks, fixes #9
Revert "merge the pull request from jcrossley3 to include udertow ring adapter"

This reverts commit 554a3ba41b5e1fdee7e3045d9c63a9b3fa21f67e.
Merge branch 'undertow' of
https://github.com/jcrossley3/clojure-web-server-benchmarks

Conflicts:
	scripts/bench.sh