SAMZA-370; document job.systemstreampartition.grouper.factory in config table
SAMZA-384; eliminate send method in task instance and send messages from collector immediately.
SAMZA-382; properly shutdown jmx server when an exception occurs in samza container
SAMZA-381; update docs for log4j jmx appender.
SAMZA-377; switching run-class.sh to use java home instead of hard coding java
SAMZA-361: Remove Grizzled SLF4J
SAMZA-386: Use Travis for continuous integration
SAMZA-389: fix website XMLHttpRequest cannot load error
SAMZA-391: Test against YARN 2.5.*
SAMZA-396; add slash for search shortcut in AM UI
SAMZA-397; exclude JDK8 builds for Scala 2.9.2 in travis
SAMZA-393; enable log compaction for checkpoint topics in kafka
SAMZA-162; remove scala 2.8 cludge in kv store
SAMZA-290; refreshing yarn am keeps page now
SAMZA-399; make task.checkpoint.segment.bytes configurable
Adding myself to committers.md
Merge branch 'master' into runonZentence