Updated README to include sample usage, a list of key features and in…

README.md

@@ -21,9 +21,38 @@ Admin Python SDK enables access to Firebase services from privileged environment
 (such as servers or cloud) in Python. Currently this SDK provides
 Firebase custom authentication support.
 
+Key Features of the Firebase Admin Python SDK:
+* Authentication: Manage users, verify tokens, and integrate with Firebase Authentication.
+* Realtime Database: Interact with Firebase Realtime Database, allowing you to retrieve, update, and listen for changes in the data stored in your Firebase database in real-time.
+* Cloud Firestore: Access and manipulate documents and collections in Firestore, Firebase's NoSQL cloud database, with support for transactions, batched writes, and complex queries.
+* Cloud Messaging (FCM): Send notifications or messages directly from your server to your users' devices via Firebase Cloud Messaging.
+* Cloud Storage: Upload, download, and manage files stored in Firebase Cloud Storage.
+* Remote Config: Programmatically change the behavior and appearance of your app without publishing an app update, by modifying configurations for different user segments.
+
+
 For more information, visit the
 [Firebase Admin SDK setup guide](https://firebase.google.com/docs/admin/setup/).
 
+## Example Usage
+Here's a simple example that demonstrates how to add a new document to a Firestore collection:
+```
+from firebase_admin import firestore
+
+# Get a reference to the Firestore service
+db = firestore.client()
+
+# Add a new document
+doc_ref = db.collection(u'users').document(u'alovelace')
+doc_ref.set({
+    u'first': u'Ada',
+    u'last': u'Lovelace',
+    u'born': 1815
+})
+
+print("Document added.")
+
+```
+
 
 ## Installation
 
@@ -32,6 +61,18 @@ in a terminal:
 
 ```
 pip install firebase-admin
+```
+Before you can use the SDK, you need to initialize it with your project's credentials. This usually involves downloading a service account key from your Firebase project settings and initializing the SDK with this key.
+
+Here's an example of how to initialize the Firebase Admin SDK in Python:
+```
+import firebase_admin
+from firebase_admin import credentials
+
+# Initialize the app with a service account, granting admin privileges
+cred = credentials.Certificate('path/to/serviceAccountKey.json')
+firebase_admin.initialize_app(cred)
+
 ```
 
 ## Contributing