add description to readme

chrisbreiding · chrisbreiding · commit c5fca7618958 · 2017-11-22T12:29:57.000-05:00
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@
 
 An ESLint plugin for projects that use Cypress.
 
+Specifies the environment and globals (`cy`, `Cypress`, etc) for use when writing tests using [Cypress](https://cypress.io).
+
 ## Usage
 
 ```js
