Beautify saliency maps

[IamShubhamGupto]

• added additional text explanation
• optimized code

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[dhruvbalwada]

This is very nice.
@IamShubhamGupto - can you also consider adding a notebook prior to this (or an earlier section), which uses some simpler method to test importance of input features.
One way to do this is quite simply is described here: https://datascience.stackexchange.com/questions/44644/how-to-determine-feature-importance-in-a-neural-network
If you want to go more advanced, you can also show how SHAP works as a second part.

[IamShubhamGupto]

Hey @dhruvbalwada
Sure, im reviewing the link provided. lets discuss this more.