Update introduction.md

Author: palisadoes

docs/docs/docs/developer-resources/introduction.md

@@ -11,6 +11,12 @@ Welcome to the Talawa-API developer resources.
 
 Coming Soon
 
+### Authentication
+
+We have kept the authentication system very minimal so that a proper authentication system can be put in place later on. We feel that some kind of typescript based authentication library that can integrate with the current database schema or a self hosted service with its own database is needed.
+
+For this reason, the authentication system needs to be detached from the GraphQL schema and be handled using REST APIs using something like Better Auth: https://github.com/better-auth/better-auth 
+
 ## Important Directories
 
 Review these important locations before you start your coding journey.