Added demo for find usages, schema viewer, structure view (#3)

Author: jimkyndemeyer

README.md

@@ -18,8 +18,12 @@ It depends on [js-graphql-language-service](https://github.com/jimkyndemeyer/js-
 
 ## Features demo
 
+**Schema setup, completion, error highlighting, documentation**
 ![](docs/js-graphql-webstorm-demo.gif)
 
+**Find usages, schema viewer, structure view**
+![](docs/js-graphql-webstorm-usages-structure-demo.gif)
+
 ## FAQ
 
 **Which IDEs are compatible with the plugin?**