Merge pull request #30 from circa10a/docs-updates

Docs updates

Author: circa10a

README.md

@@ -43,6 +43,8 @@ News). See the [install options](#install-options) for examples on how to instal
 Currently supported providers:
 
 - [Discord](providers/discord/README.md)
+- [Rocket.Chat](providers/rocketchat/README.md)
+- [SMTP (email)](providers/smtp/README.md)
 - [Yammer](providers/yammer/README.md)
 
 ### Install Options

providers/discord/README.md

@@ -22,3 +22,7 @@ providers:
 ```
 
 [webhooks]:https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks
+
+__Example post:__
+
+![Discord post example](https://i.imgur.com/mzXYTwW.png)

providers/rocketchat/README.md

@@ -28,3 +28,7 @@ providers:
 ```
 
 [webhook]:https://rocket.chat/docs/administrator-guides/integrations/
+
+__Example post:__
+
+![Rocketchat post example](https://i.imgur.com/4bKSTcf.png)

providers/smtp/README.md

@@ -26,6 +26,15 @@
     # customTemplate: /path/to/email.html
 ```
 
+## Default Template
+
+The default email template looks like this:
+
+![AWS News default email template](https://i.imgur.com/v6Ec7iK.png)
+
+The footer can be customized in the [config.yaml](/config.yaml) `providers.smtp.footer`. For more
+customization see [custom template](#custom-template).
+
 ## Custom Template
 
 To provide a custom email html template, start with the `defaultTemplate` included in the code