Replaced log4j.properties with simplelogger.properties: karyon-examples uses slf4j simplelogger. so we either need to replace log4j.properties with simplelogger.properties (as this update does) or modify the build.gradle to use log4j.
Merge pull request #38 from majikthys/master

karyon-examples uses simplelogger, thus simplelogger.properties (not log4j.properties)