[RNAdam-38] Fix broken build due to upstream changes.
[RNAdam-39] Removing local Gene model stubs
Merge pull request #40 from fnothaft/downstream-updates

Upgrading to downstream updates in ADAM
Implemented the mapKmersToClasses method in Quantify.scala
Addresses RNAdam Issue Number 31
Merge pull request #37 from niranjan93/NK_mapKmersToClasses

Implemented the mapKmersToClasses method in Quantify.scala
Added joinTranscripts in Quantify