Merge pull request DataScienceSpecialization#83 from DanieleP/master

Tutorial for those struggling with PA3

Author: seankross

rprog.md

@@ -7,8 +7,9 @@ permalink: /rprog/
 ## Programming Assignments
 
 - [Tutorial for those struggling with Programming Assignment 1](https://github.com/derekfranks/practice_assignment)  
-- [PA1-test: `testthat`, Unit Tests for Programming Assignment 1](https://github.com/cbryant1000/pa1test)
 - [Tutorial for those struggling with Programming Assignment 2](https://github.com/DanieleP/PA2-clarifying_instructions)
+- [Tutorial for those struggling with Programming Assignment 3](https://github.com/DanieleP/PA3-tutorial)
+- [PA1-test: `testthat`, Unit Tests for Programming Assignment 1](https://github.com/cbryant1000/pa1test)
 - [PA3-test: `testthat`, Unit Tests for Programming Assignment 3](https://github.com/cbryant1000/pa3test)