docs(plugins): update docs and plugin params

src/plugins/toast.ts

@@ -8,9 +8,24 @@ export interface ToastOptions {
   addPixelsY?: number;
 }
 /**
+ * @name Toast
+ * @description
  * This plugin allows you to show a native Toast (a little text popup) on iOS, Android and WP8. It's great for showing a non intrusive native notification which is guaranteed always in the viewport of the browser.
  *
  * Requires Cordova plugin: `cordova-plugin-x-toast`. For more info, please see the [Toast plugin docs](https://github.com/EddyVerbruggen/Toast-PhoneGap-Plugin).
+ *
+ * ```shell
+ * cordova plugin add cordova-plugin-x-toast
+ * ```
+ *
+ * @usage
+ * ```ts
+ * Toast.show("I'm a toast", 5000, "center").subscribe(
+ *   toast => {
+ *     console.log(toast);
+ *   }
+ * );
+ * ```
  */
 @Plugin({
   plugin: 'cordova-plugin-x-toast',