initial release commit
feedback: round 1, apache license and minor readme fixes
feedback and enhancements:

- update examples and code to Spark 1.1
- clean up and improve Vagrantfile instructions
- better configurability of context settings
clean up: unused file, comments, docs, chefspecs
having problems with ruby 2.1.3; locking to 2.1.2
Merge pull request #1 from spark-jobserver/initial-0.1.0-release

initial release commit