openzeppelin-contracts/contracts/token/CrowdsaleToken.sol

pragma solidity ^0.4.8;


import "./StandardToken.sol";


/*
 * @title CrowdsaleToken
 *
 * @dev Simple ERC20 Token example, with crowdsale token creation
 * @dev IMPORTANT NOTE: do not use or deploy this contract as-is. It
 needs some changes to be production ready.
 */
contract CrowdsaleToken is StandardToken {

  string public constant name = "CrowdsaleToken";
  string public constant symbol = "CRW";
  uint public constant decimals = 18;
  // replace with your fund collection multisig address
  address public constant multisig = 0x0;


  // 1 ether = 500 example tokens
  uint public constant PRICE = 500;

  /**
  * @dev A function that recieves ether and send the equivalent amount of
  the token to the msg.sender
  */
  function () payable {
    createTokens(msg.sender);
  }

  /**
  * @dev Function to create tokens and send to the specified address
  * @param recipient address The address which will recieve the new tokens.
  */
  function createTokens(address recipient) payable {
    if (msg.value == 0) {
      throw;
    }

    uint tokens = msg.value.mul(getPrice());
    totalSupply = totalSupply.add(tokens);

    balances[recipient] = balances[recipient].add(tokens);

    if (!multisig.send(msg.value)) {
      throw;
    }
  }

  /**
  * @dev replace this with any other price function
  * @return The price per unit of token. 
  */
  function getPrice() constant returns (uint result) {
    return PRICE;
  }
}