Add examples to README

Author: MunGell

README.md

@@ -15,6 +15,13 @@ This module exposes 2 functions:
 * `registerAPI(name, api, plugin)` - registers plugin API in global variable (`window`)
 * `pluginApi(name)` - returns plugin API based on its name
 
+## Examples
+
+Following plugin already use `@vanakat/plugin-api`:
+
+* [Zotero Bridge](https://github.com/vanakat/zotero-bridge) as a API provider
+* [Zotero Link](https://github.com/vanakat/zotero-link) as API consumer
+
 ## License
 
 MIT