Merge pull request DataScienceSpecialization#131 from amsilvr/master

Added link to choropleth

Author: seankross

ddp.md

@@ -8,6 +8,9 @@ permalink: /ddp/
 - [ggvis and rmarkdown slides with interactive plots](http://qua.st/ggvis-shiny-html5-slides)
 
 ## Shiny
+- Choropleth of PBS WARN Distribution of Wireless Emergency Alerts
+  - [Code for Shiny App](https://github.com/amsilvr/shiny_choropleth)
+  - [App running on shinyapps.ip](https://silverman.shinyapps.io/warn_wea/)
 - [Shiny app to simulate 401K growth with interactive plots](http://www.mephistosoftware.com/shiny/401k_simulator/)
 - [Shiny Video Tutorials Playlist on Youtube](http://www.youtube.com/playlist?list=PL6wLL_RojB5xNOhe2OTSd-DPkMLVY9DfB)
 - [Tutorial on writing Shiny simulation apps](https://github.com/homerhanumat/shinyTutorials)