Distributed returns 0
Change logger format
Optionally randomly shuffle the training and validation data
Put Spark Submit Script in its own File

Spark submit scripts have to have *.py extensions. For now, launch
this directly from the library directory.
Merge branch 'embedding' of https://github.com/wpm/Dorado into embedding
Merge branch 'embedding' of https://github.com/wpm/Dorado into embedding