Added 3 datasets from 2 sources

Number of people wounded from global terrorism database (1970-2013),
Number of people killed from global terrorism database (1970-2013),
First digit of numbers from uniqpass dictionary. 


I see what you're saying. This is the first I've seen the law being applied to alphanumeric data and I'm not sure what the implications are. For now, I think I'd like to keep the data sets limited to numeric data. Do you think we could remove this set from the pull request and add the other two?