ERC721Bounty

This is code is developed for the bounty challenge of "Create a Smart Contract that Issues ERC 721 Tokens #6 " (BountyOneBounties/Issues#6).

The Smart Contract is created in order that issues ERC721 tokens to addresses whitelisted by the owner.

The challenge rquired:

• The tokens should not be transferable.

• Each token can have a string attached as metadata that is publicly retrievable.

• Burning functionality by only owner.