add instructions for running tests against jekyll 3

18F · Mar 6, 2015 · 6d70a2a · 6d70a2a
1 parent b8639c3
commit 6d70a2a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -11,6 +11,12 @@ bundle
 bundle exec rspec
 ```
 
+### Running against Jekyll 3
+
+```bash
+BUNDLE_GEMFILE=gemfiles/jekyll_3.gemfile bundle exec rspec
+```
+
 ## Public domain
 
 This project is in the public domain within the United States, and