Create Sentiment Analysis and Keyword Search

Using a csv file made from downloaded articles from NexisLexis, this creates four new columns and appends them to the csv file: percent of words in the article that are positive, percent that are negative, dummy for whether the article mentions a company with a male CEO, dummy for whether the article mentions a company with a female CEO (see keyword lists in the script).
Merge pull request #1 from lknelson/patch-1

Create Sentiment Analysis and Keyword Search