Massively reduced books.json
Renaming order_records.json to records.json
renaming asymmetric_friendships.json to friends.json
Removing skeleton code
Fixed books and dna data, added wordcount.py and tweaks to MapReduce
Interface tweaks to mapreduce framework and wordcount example
Adding solutions
Adding files for optional quiz
Updated reference to myudfs.jar
relinking more s3 buckets
Merge branch 'master' of https://github.com/uwescience/datasci_course_materials

updates pulled from billhowe
completed problem 1
completed problem 2