Indian pincodes API

[krishnan-ubuntu]

• [ ] My submission is formatted according to the guidelines in the contributing guide
• [ ] My addition is ordered alphabetically
• [ ] My submission has a useful description
• [ ] The description does not have more than 100 characters
• [ ] The description does not end with punctuation
• [ ] Each table column is padded with one space on either side
• [ ] I have searched the repository for any relevant issues or pull requests
• [ ] Any category I am creating has the minimum requirement of 3 items
• [ ] All changes have been squashed into a single commit

[marcelscruz]

Thank you!