docs: Added plug to widget repository

Author: jonerickson

docs/external-integration/widget/index.md

@@ -4,4 +4,10 @@ PERSCOM.io offers a powerful widget that allows the integration of your personne
 
 ::: info
 Each widget integration requires your PERSCOM Account ID and the use of an API key with the `access:widget` scope assigned. Your PERSCOM Account ID can be found under the Settings of your PERSCOM.io Dashboard.
-:::
+:::
+
+### Development
+The PERSCOM.io Widget project is **open source** and actively looking for developers to participate. If you have experience with frontend frameworks such as React, we encourage you to contribute.
+::: tip Repository 
+ You can view the project on [Github](https://github.com/DeschutesDesignGroupLLC/PERSCOM-3.0-Widget).
+:::