Merge pull request #11 from netlify/fix/link_to_unittests

fix: broken link to tests

Author: erezrokah

README.md

@@ -60,7 +60,7 @@ modified.
 npm run ava
 ```
 
-Runs [unit tests](/test/main.js).
+Runs [unit tests](/test/index.js).
 
 ```bash
 npm run lint