No log4j appenders for org.elasticsearch.node in monoloithic jar

Affects the monolithic jar here:

http://semicomplete.com/files/logstash/logstash-1.1.0beta7-monolithic.jar

Whenever it starts and I have an elasticsearch output I get:

log4j:WARN No appenders could be found for logger (org.elasticsearch.node).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Which is just a basic log4j misconfiguration, but harder to fix in the monolithic jar case. Would be nice if it worked out of the box, so I can grab an elasticsearch exceptions when things go wrong.