Update feature list in readme

README.md

@@ -169,6 +169,26 @@ web: gunicorn dietela_backend.wsgi --log-file -
 
     Clients can continue by choosing recommended diet program that is suitable for their needs
 
+- PBI 4: Registration
+
+    Clients can register an account to access Dietela's authenticated-only features
+
+- PBI 5: Login
+
+    Clients can do authentication using a registered account to access Dietela's authenticated-only features
+
+- PBI 6: Logout
+
+    Clients can sign out from the Dietela app
+
+- PBI 7: Checkout
+
+    Clients can choose a diet program and a nutritionist then proceed to do the payment
+
+- PBI 8: Payment Integration
+
+    Clients can perform payment using a third party payment gateway (Midtrans)
+
 
 ### Developers