Merge pull request #1123 from sashadt/20141015-hadoop_world

Updating docs and names for generic dimensions operators
removed files that shouldn't be checked in
Merge branch '20141015-hadoop_world' of https://github.com/DataTorrent/Malhar into 20141015-hadoop_world
Updating documentation and default settings for dimensions apps
SPOI-3305 Adding JSON Sales events generator and tests
SPOI-3306 Changing default schema to sales demo
Merge branch '20141015-hadoop_world' of github.com:Datatorrent/Malhar into 20141015-hadoop_world
Adding productCategory debug option to sale input generator