Use fake JSON API as a prototyping backend.

[Yasirunet]

Since we are still in early stage of our back end project, let's use JSON server as a prototyping backend.

[bihanviranga]

In the last meeting, we only decided endpoints for /users. We should decide an endpoint for authentication, and what JSON it should accept/return.

Also, me and @LakshikaDias are working on the backend. Will upload soon.

[Yasirunet]

Sure @bihanviranga take your time 👍