Adding documentation to imdb.py

[AJ-54]

Actual Behaviour

The code seems messy for a newbie to understand , it requires documentation and proper structure so that the code looks clean and can be understood easily.

Expected Behaviour

The feature will make the code self explanatory and allow users/contributors to understand quickly.

Steps to reproduce it

Would you like to work on the issue?

I would like to work on the issue

[AJ-54]

@akshatnitd I have added the documentation file , kindly look at my PR and suggest changes if any .
Thank you.

[sourabhpruthi10]

@akshatnitd i would like to work on this