add travis ci module

close #245

_site/content/posts/modules/travisci.md

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+---
+title: "TravisCI"
+date: 2018-07-18T14:36:08-04:00
+draft: false
+---
+
+Displays build information for your Travis CI account.
+
+<img src="/imgs/modules/travisci.png" width="609" height="150" alt="travisci screenshot" />
+
+## Source Code
+
+```bash
+wtf/travisci/
+```
+
+## Required ENV Variables
+
+<span class="caption">Key:</span> `WTF_TRAVIS_API_TOKEN` <br />
+<span class="caption">Value:</span> Your <a href="https://developer.travis-ci.org/authentication">Travis CI API</a> access token.
+
+## Keyboard Commands
+
+None.
+
+## Configuration
+
+```yaml
+travisci:
+  enabled: true
+  position:
+    top: 4
+    left: 1
+    height: 1
+    width: 2
+  refreshInterval: 900
+```
+
+### Attributes
+
+`enabled` <br />
+Determines 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: A positive integer, `0..n`.