be more explicit with sign prefixes (as per Mate's feedback)
Merge branch 'master' of github.com:holdenk/learning-spark-examples
refactor and cleanup based on Matei's feedback
actually send the exchange to the client (a little too eager with the refactoring)
Simplify the client/exchange pandas thing a bit more
more comments
long lines
Merge branch 'master' of github.com:holdenk/learning-spark-examples
upgrade to 1.1.0 from 1.02