Reduced dna.json and made matrix.json sparse
Reduced order records.json
restructure directory and tweaked asymmetric friendships
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
Merge remote-tracking branch 'uw/master'