docs(gitbook): try out generated docs

docs/plugins/custom-uisdk/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/custom-uisdk/index.ts#L8">
+  Improve this doc
+</a>
+
+# CustomUISDK
+
+```
+$ ''
+$ npm install @ionic-native/plugins/custom-uisdk
+```
+
+## [Usage Documentation](https://ionicframework.com/docs/native/custom-uisdk/)
+
+Plugin Repo: [https://github.com/paytm/paytm-customuisdk-cordova](https://github.com/paytm/paytm-customuisdk-cordova)
+
+This plugin is used to access Paytm's native CustomUISDK framework's apis.
+
+## Supported platforms
+
+- Android, iOS