Fixed first problem's equation in the assignment 2 description.
tweaking the language for what to turn in for assignment2 to make it clearer
Mapper in inverted_index.py

Begining work on the mapper function.

[Assignment: 3 Problem: 1]
Merge pull request #17 from inthebestway/text

tweaking the language for how to turn in assignment2
Merge pull request #16 from ksuszka/assignment2-patch

Fixed first problem's equation in the assignment 2 description.
Merge branch 'master' of git://github.com/uwescience/datasci_course_materials
Begining Solution to Assignment 3 Problem 1

[Assignment: 3 Problem: 1]