Update README.md

Update README.md

Updated the UI and improved the GraphQL mutations

Update README.md

Added Edit note GraphQL mutation

Added GraphQL notes list query, add and delete note mutations

Added GraphQL Queries and Mutations

Finished CRUD notes operations to vue js frontend

Fixed Note Detail component

Fixed delete and update notes forms

Added Vue JS frontend

Added some new tests

Restructured the project and added some tests

Added a REST API endpoint

Added JWT Authentication