add release notes for v.0.2

Author: khazra

README.md

@@ -0,0 +1,10 @@
+***Main Features***
+- Authentication by revoking token v1
+
+***Smaller Features***
+- Logging to file with RotatingFileHandler
+- Simple database operations with flask-mysql
+
+***Available Endpoints***
+- /login
+- /user/{id}