Merge pull request #6 from criccomini/master

SAMZA-9; upgrade samza to yarn 2.2.
Check for JAVA_HOME and build Samza and install it locally.
Merge pull request #7 from jghoman/fixForMyMachine

Check for JAVA_HOME and build Samza and install it locally.
update log4j to use new samza system properties and a daily rolling appender