Update README.md

README.md

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 ## BackgroundTask
-[Call a nanoflow when app is in background]
+Call a nanoflow when app is in background based on the BackgroundFetch API for Android and iOS.
 
 ## Features
-[feature highlights]
+Background Fetch is a *very* simple plugin which attempts to awaken an app in the background about **every 15 minutes**, providing a short period of background running-time.
+
+This widget is build to incorporate the https://github.com/transistorsoft/react-native-background-fetch into Mendix Native apps
+### iOS
+- There is **no way** to increase the rate which a fetch-event occurs and this plugin sets the rate to the most frequent possible — you will **never** receive an event faster than **15 minutes**.  The operating-system will automatically throttle the rate the background-fetch events occur based upon usage patterns.  Eg: if user hasn't turned on their phone for a long period of time, fetch events will occur less frequently.
+- [__`scheduleTask`__](#executing-custom-tasks) seems only to fire when the device is plugged into power.
+- ⚠️ When your app is **terminated**, iOS *no longer fires events* — There is *no such thing* as **`stopOnTerminate: false`** for iOS.
+- iOS can take *days* before Apple's machine-learning algorithm settles in and begins regularly firing events.  Do not sit staring at your logs waiting for an event to fire.  If your [*simulated events*](#debugging) work, that's all you need to know that everything is correctly configured.
+- If the user doesn't open your *iOS* app for long periods of time, *iOS* will **stop firing events**.
+
+### Android
+- The Android plugin provides a [HeadlessJS](https://facebook.github.io/react-native/docs/headless-js-android.html) implementation allowing you to continue handling events even after app-termination (see **[`@config enableHeadless`](#config-boolean-enableheadless-false)**)
 
 ## Usage
 - Clone this Git