population data grabber
get citipop data
Merge pull request #3 from xiaoou2306/uspop

add citypop.csv obtained using get-data.py
buggy get-data.py
erge branch 'uspop' of https://github.com/malecki/edav into gh-pages
firstcommit
Merge branch 'gh-pages' of https://github.com/shiyawang/edav into gh-pages