Update Readme

[Rohit-554]

So, some screens in the app is already implemented just take a screen shots by downloading the app and running in your phone or either fork this repo and run it in you local machine with android studio installed and just write below which screens are implemented, as mentioned in readme

For apk checkout the release section in the midhorizontal_right of the your screen

e.g.
if the login screen is implemented just insert the screen shot with height = 400 and width = 200,
the photos should be after the contributing section in readme and before Issues and give this section name as Implemented Screen.
also stack all the photos one after another you can use <p> tag.

so it will be like

Contributing

  ...

Implemented Screens

  Screen shots here

Issues

  ...

[Soumya-Kushwaha]

I would like to work on this.
Kindly share the play store app link

[Rohit-554]

The app is not published, Please refer the Releases section there you will get the Apk