add citypop ggplot graphs

3 graphs
1) citypop grouped by top 5 cities
Revert "add citypop ggplot graphs"

This reverts commit 4300e85319c828045c0a88ab0e456a2deed52624.
remove wrong file (#70)
Create My intro 

sorry its little late
Update My intro
Update My intro
Rename My intro to My intro.md
Update My intro.md
Update My intro.md
Update My intro.md
Update My intro.md
adding intro

Aarti[aj177] intro
Merge branch 'gh-pages' of https://github.com/harhayer/edav into harhayer-gh-pages
rename #77 following naming convention
Merge branch 'gh-pages' of https://github.com/aj177/edav into aj177-gh-pages
naming convention (#73)
revert real intro. grr
Andrew & Shiya - Work plan v1
Merge pull request #74 from andrewyuan/andrewyuan

Andrew & Shiya - Work plan v1
[blog-post] Project Overview & Sprint 1,2 --Zijian Yi