Add module readme

_site/content/posts/modules/twitter.md

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+---
+title: "Twitter"
+date: 2018-07-31T20:21:37-07:00
+draft: false
+---
+
+Connects to the Twitter API and displays a single user's tweets
+NOTE: This only works for single-application developer accounts for now
+
+## Source Code
+
+```bash
+wtf/twitter/
+```
+## Required ENV Variables
+
+<span class="caption">Key:</span> `WTF_TWITTER_BEARER_TOKEN` <br />
+<span class="caption">Action:</span> Your <a href="https://developer.twitter.com/en/docs/basics/authentication/overview/application-only.html">Twitter single-application Bearer Token</a><br />
+
+## Keyboard Commands
+
+None.
+
+## Configuration
+
+```yaml
+twitter:
+  enabled: true
+  position:
+    top: 0
+    left: 1
+    height: 1
+    width: 1
+  refreshInterval: 20000
+```
+
+### Attributes
+
+`enabled` <br />
+Whether or not this module is executed and if its data displayed onscreen. <br />
+Values: `true`, `false`.
+
+`position` <br />
+Defines where in the grid this module's widget will be displayed. <br />
+
+`refreshInterval` <br />
+How often, in seconds, this module will update its data. <br />
+Values: Any positive integer, `0..n`.