Merge pull request #42 from deflaux/master

Updates per recent data and runtime environment changes.
Merge pull request #43 from deflaux/master

Updated all sample datasets to Google Genomics Public Data
Send credentials to the workers to use the refreshToken.

The credentials are serialized as String and sent to the workers where they are reused
when requesting the refreshToken.
Merge pull request #47 from elmer-garduno/master

Send credentials to the workers to use the refreshToken.