Ability to pay with GSPI for purchases on shopping.io

Enable to pay for purchases with GSPI token on the shopping.io. Because shopping is essential in shopping.io, enabling people to pay for their purchases with a GSPI token could become the most important use case for GSPI. Also it can be great incentive to hodl GSPI. Instead of selling on the market people can spending their tokens on the platform for normal shopping. Team will recover some GSPI from circulation and can use them for marketing, rewards or even burn a small part creating scarcity for GSPI before their distribute GSPI back to the hodlers/ on market.