If you want me to buy you coffee the next time we are together in a coffee shop, I will if you agree to tell me about your user experience with inkdit.
1. Create an account on Inkdit.com
2. Create a contract
3. use the "Pull from GitHub" button to grab this contract from https://github.com/greggoldring/Inkdit-will-buy-coffee-for...
4. Sign the contract 
5. Select gregg@inkdit.com as the other signatory and Share the contract to that address.