Update README for recent changes (#9)

- Mention Maven publication
 - Mention modern Bluetooth permissions which should be checked and configured
 - Add a simplified typical flow
 - Add OHF badge

README.md

@@ -1,6 +1,26 @@
 # Android SDK for Improv Wi-Fi
 ## Installation
-For now this library is not published through maven.  For now you can take the AAR from the [Latest Release](https://github.com/improv-wifi/sdk-android/releases/latest) and place it in your `libs` folder of your applicaiton and add it as a file dependency.
+Recent releases of the library are published on Maven Central, and each release of the library includes the AAR on the [GitHub release](https://github.com/improv-wifi/sdk-android/releases).
+
+```groovy
+dependencies {
+    implementation "org.openhomefoundation.improv-wifi:sdk-android:<latest version>"
+}
+```
 
 ## Usage
-This library is for dealing with the complexities of the Bluetooth connection not creating any UI.  You as the developer are responible for creating the UI/UX.  A sample [Compose](https://developer.android.com/jetpack/compose) UI is provide in the demo application.
+This library is for dealing with the complexities of the Bluetooth connection not creating any UI. You as the developer are responsible for creating the UI/UX. A sample [Compose](https://developer.android.com/jetpack/compose) UI is provided in the demo application.
+
+ - Review which [permissions are needed](https://developer.android.com/develop/connectivity/bluetooth/bt-permissions) for your app. By default, the library only adds the Bluetooth permissions to the manifest and no location permissions. You will want to add the location permission and/or declare that your app doesn't use Bluetooth to derive physical location.
+
+ - A simplified typical flow looks like:
+   ```mermaid
+   flowchart TB
+    A("Check app permissions and Bluetooth status")-- OK --> B["`ImprovManager::findDevices`"]
+    B ---|onDeviceFound|C["ImprovManager::connectToDevice"]
+    B --> D["ImprovManager::stopScan"]
+    C ---|onConnectionStateChange true, onStateChange AUTHORIZED|E["ImprovManager::sendWifi"]
+    E ---|onStateChange PROVISIONED, onRpcResult has url|F("Redirect to device in browser")
+   ```
+
+[![Improv Wi-Fi - A project from the Open Home Foundation](https://www.openhomefoundation.org/badges/ohf-library.png)](https://www.openhomefoundation.org/)