Rockchain, the Ethereum data privacy protocols is described on www.rockchain.org
Abstract: Rockchain is a second infrastructure layer on top of Ethereum for managing data pricacy. Its dAppBox is a data firewall whose rules are defined in Ethereum smart contract. This dappBox is open to computations that don't breach the data privacy.
Our crowdsale contract is defined in contracts/Crowdsale.sol
The underlying token is defined in contracts/ROKToken.sol
The repository includes scripts (based on Truffle) for testing the contract deployment folder. It also contains detailed unit tests in the folder test.
An advanced description of the contract design is available at: http://rockchain.blog/a-few-improvments-for-the-erc20-crowdsale-process-in-our-public-github