Updated readme, changelog and version to 0.1.1-beta for release (#37)

Co-authored-by: Mirza Sohail Hussain <mirza.sohailhussain@gmail.com>

Author: yasirfolio3

CHANGELOG.md

@@ -1,4 +1,11 @@
 
+## [0.1.1-beta] - October 26th, 2022
+### Beta release of the Optimizely X Full Stack Flutter SDK.
+*Following are the listener related methods added in Flutter SDK.*
+* removeNotificationListener
+* clearNotificationListeners
+* clearAllNotificationListeners
+
 ## [0.1.0-beta] - October 6th, 2022
 ### Beta release of the Optimizely X Full Stack Flutter SDK.
 *Following are the apis added in Flutter SDK.*

README.md

@@ -29,7 +29,7 @@ Other Flutter platforms are not currently supported by this SDK.
 To add the flutter-sdk to your project dependencies, include the following in your app's pubspec.yaml:
 
 ```
-   optimizely_flutter_sdk: ^0.1.0-beta
+   optimizely_flutter_sdk: ^0.1.1-beta
 ```
 
 Then, import the package in your application code:

pubspec.yaml

@@ -1,6 +1,6 @@
 name: optimizely_flutter_sdk
 description: This repository houses the Flutter SDK for use with Optimizely Full Stack and Optimizely Rollouts.
-version: 0.1.0-beta
+version: 0.1.1-beta
 homepage: https://github.com/optimizely/optimizely-flutter-sdk
 
 environment: