Update README.md

[vartika-arora]

The README.md should contain a detailed description of what the application does, and details on running the application in a proper markdown format.

[rakesh-verma-16]

Hey, if it's still unclaimed, I'd like to work on this one. I guess it'd be a good start to my first hacktober fest.

[vartika-arora]

@rakesh-verma-16 Go ahead!