Merge pull request #67 from fivethirtyeight/commencement

Add data on presidential commencement speeches

README.md

@@ -4,6 +4,7 @@ We hope you'll use it to check our work and to create stories and visualizations
 
 Article Date(s) | Headline(s) | Folder
 ---|---------|-------------
+May 11, 2016 | [Sitting Presidents Give Way More Commencement Speeches Than They Used To](http://fivethirtyeight.com/features/sitting-presidents-give-way-more-commencement-speeches-than-they-used-to/) | `presidential-commencement-speeches`
 March 30, 2016 | [How Trump Hacked The Media](http://fivethirtyeight.com/features/how-donald-trump-hacked-the-media/) | `trump-news`
 March 10, 2016 | [These Are The Phrases Each GOP Candidate Repeats Most](http://fivethirtyeight.com/features/these-are-the-phrases-each-gop-candidate-repeats-most) | `repeated-phrases-gop`
 Feb. 2, 2016 | [Iowa Teaches Pollsters To Poll Until The End](http://fivethirtyeight.com/features/iowa-teaches-pollsters-to-poll-until-the-end/) | `poll-of-pollsters`

presidential-commencement-speeches/README.md

@@ -0,0 +1,16 @@
+### Presidential commencement speeches
+
+The data behind the story [Sitting Presidents Give Way More Commencement Speeches Than They Used To](http://fivethirtyeight.com/features/sitting-presidents-give-way-more-commencement-speeches-than-they-used-to/), not including commencement speeches by President Obama in 2016
+
+Header | Definition
+---|---------
+`president` | Number of president (33 is Harry Truman, the 33rd president; 44 is Barack Obama, the 44th president)
+`president_name` | Name of president
+`title` | Description of commencement speech
+`date` | Date speech was delivered
+`city` | City where speech was delivered
+`state` | state where speech was delivered
+`building` | Name of building in which speech was delivered
+`room` | Room in which speech was delivered
+
+Source: [American Presidency Project](http://www.presidency.ucsb.edu/), Gerhard Peters and John T. Woolley