Do not stop the SparkContext

1.3.1

Do not kill sparkcontext: also updated README.md

Tiny fix to main() return value

1.3

Fix warning on returning non-unit from main

Allow setting SparkMaster and SparkContext externally

1.2

Allow setting sparkcontext and sparkmaster externally

OnlineHDPExample is running. The statistics generated are suspect

1.1

OnlineHDPExample is running. The statistics generated are suspect.

1.0

Update to Spark 2.X and add stopwords