docs(gitbook): try out generated docs

docs/plugins/app-availability/README.md

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+<a style="float:right;font-size:12px;" href="http://github.com/danielsogl/awesome-cordova-plugins/edit/master/src/@awesome-cordova-plugins/plugins/app-availability/index.ts#L1">
+  Improve this doc
+</a>
+
+# App Availability
+
+```
+$ ionic cordova plugin add cordova-plugin-appavailability
+$ npm install @ionic-native/plugins/app-availability
+```
+
+## [Usage Documentation](https://ionicframework.com/docs/native/app-availability/)
+
+Plugin Repo: [https://github.com/ohh2ahh/AppAvailability](https://github.com/ohh2ahh/AppAvailability)
+
+This plugin allows you to check if an app is installed on the user's device. It requires an URI Scheme (e.g. twitter://) on iOS or a Package Name (e.g com.twitter.android) on Android.
+
+Requires Cordova plugin: cordova-plugin-appavailability. For more info, please see the [AppAvailability plugin docs](https://github.com/ohh2ahh/AppAvailability).
+
+## Supported platforms
+
+- Android
+  - iOS