Add article illustrating how to use R to download lecture videos.

Author: lgreski

rprog.md

@@ -27,6 +27,7 @@ permalink: /rprog/
 - [S Objects, R Objects, and Lexical Scoping](https://github.com/lgreski/datasciencectacontent/blob/master/markdown/rprog-lexicalScoping.md)
 - [Common R Mistakes: Overwriting Functions with Data Objects](https://github.com/lgreski/datasciencectacontent/blob/master/markdown/rprog-overwritingRFunctions.md)
 - [Forms of the Extract Operator](https://github.com/lgreski/datasciencectacontent/blob/master/markdown/rprog-extractOperator.md)
+- [Creative Use of R: Downloading Course Lectures](https://github.com/lgreski/datasciencectacontent/blob/master/markdown/rprog-downloadingLectures.md) Article illustrating how to use R to automate the download of lectures from *Data Science Specialization* courses, such as *R Programming*. Techniques used in this article are helpful to make research reproducible, as required for courses like *Getting and Cleaning Data* and *Reproducible Research*. 
 
 
 ## R language cheatsheet