Demo for web3 based unit tests

This very little demo project shows how you can interact against a solidity contract in java with standard unit test tool

1. Run mvn clean install
2. The Web3 compiler plugin ẁill be downloaded
3. Add your contracts.sol under src/main/contracts
4. Run mvn web3j:generate-sources - contracts will be compiled into java code and occur in folder java/org.web3.model
5. Run mvn clean install
6. Run tests in test folder