Merge branch 'aagarw30-patch-1't push origin master

Author: seankross

ddp.md

@@ -7,3 +7,4 @@ permalink: /ddp/
 - [Slidify to Github walkthrough](http://rpubs.com/thoughtfulbloke/25103)
 - [ggvis and rmarkdown slides with interactive plots](http://qua.st/ggvis-shiny-html5-slides/)
 - [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)