This repo holds our Pre-Sale contract and tests around it using Truffle
The Pre-Sale contract itself is based on:
https://github.com/sikoba/token-presale/blob/master/contracts/SikobaPresale.sol
We've leveraged the logic and majority of the contract and adjusted to adhere to new Solidity standards and of course Bounty0x requirements.
Feel free to take it and make use of it at your own discretion.
Bounty0x Team