docs(*): link to discord chat

README.md

@@ -15,7 +15,7 @@ New package name: `@agm/core`
 
 ----
 
-[Website](https://angular-maps.com/) | [Demo](https://stackblitz.com/edit/angular-google-maps-demo) | [Chat](https://gitter.im/SebastianM/angular2-google-maps) | [API Documentation](https://angular-maps.com/api-docs/) | [Twitter](https://twitter.com/Sebholstein)
+[Website](https://angular-maps.com/) | [Demo](https://stackblitz.com/edit/angular-google-maps-demo) | [Chat](https://discord.gg/XAr2ACE) | [API Documentation](https://angular-maps.com/api-docs/) | [Twitter](https://twitter.com/Sebholstein)
 
 -----
 

docs/content/guides/getting-started.md

@@ -152,6 +152,6 @@ The command starts the following things:
 
 When you have problems setting up **Angular Google Maps (AGM)** or questions in general, the best way is to join the chat where you find nice people from the community that can answer you questions:
 
-<a href="https://gitter.im/SebastianM/angular2-google-maps" target="_blank" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect">
-  Chat on Gitter
+<a href="https://discord.gg/XAr2ACE" target="_blank" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect">
+  Chat on Discord
 </a>