generate test-jar and add more logging for demo

https://github.com/rackerlabs/blueflood/wiki/UDP-Module
Merge pull request #94 from lakshmi-kannan/bf_fix_select_stats

Add stats to filter if its specified as a single item without commas
Merge pull request #96 from wolfdancer/package_udp_test_jar

generate test-jar and add more logging for demo purpose
Merge pull request #95 from lakshmi-kannan/refactoring_changes_for_supporting_typed_points

RFR: Refactoring changes for supporting typed points
Add bigml histogram maven dependency
Add HistogramRollup class and test
Add HistogramSerializert class and test