add endorsements to data webpage

Author: dmil

endorsements/README.md

@@ -0,0 +1,22 @@
+---
+files:
+  - https://projects.fivethirtyeight.com/endorsements-2020-data/endorsements-2020.csv
+---
+
+# Endorsements
+
+This file contains links to the data behind [The 2020 Endorsement Primary](https://projects.fivethirtyeight.com/2020-endorsements/democratic-primary/).
+
+**Methodology:**
+
+- [How Our Presidential Endorsement Tracker Works](https://fivethirtyeight.com/methodology/how-our-presidential-endorsement-tracker-works/)
+
+
+**Related Posts:** 
+
+- [We’re Tracking 2020 Presidential Endorsements. Here’s Why They Probably Still Matter](https://fivethirtyeight.com/features/were-tracking-2020-presidential-endorsements-heres-why-they-probably-still-matter/)
+- [The Endorsement Primary
+(2016s](https://projects.fivethirtyeight.com/2016-endorsement-primary/)
+
+
+

index.csv

@@ -1,4 +1,5 @@
 dataset_url,article_url,live
+https://github.com/fivethirtyeight/data/tree/master/endorsements,https://projects.fivethirtyeight.com/2020-endorsements/democratic-primary/,TRUE
 https://github.com/fivethirtyeight/data/tree/master/polls,https://projects.fivethirtyeight.com/polls/,TRUE
 https://github.com/fivethirtyeight/data/tree/master/cabinet-turnover,https://fivethirtyeight.com/features/two-years-in-turnover-in-trumps-cabinet-is-still-historically-high/,
 https://github.com/fivethirtyeight/data/tree/master/forecast-review,https://fivethirtyeight.com/features/how-fivethirtyeights-2018-midterm-forecasts-did/,