Add PayrollInterface

contracts/Payroll.sol

@@ -0,0 +1,31 @@
+pragma solidity ^0.4.11;
+
+import "zeppelin/lifecycle/TokenDestructible.sol";
+
+// For the sake of simplicity lets asume USD is a ERC20 token
+// Also lets asume we can 100% trust the exchange rate oracle
+contract PayrollInterface {
+  /* OWNER ONLY */
+  function addEmployee(address accountAddress, address[] allowedTokens, uint256 initialYearlyUSDSalary);
+  function setEmployeeSalary(uint256 employeeId, uint256 yearlyUSDSalary);
+  function removeEmployee(uint256 employeeId);
+
+  function addFunds() payable;
+  function scapeHatch();
+  // function addTokenFunds()? // Use approveAndCall or ERC223 tokenFallback
+
+  function getEmployeeCount() constant returns (uint256);
+  function getEmployee(uint256 employeeId) constant returns (address employee); // Return all important info too
+
+  function calculatePayrollBurnrate() constant returns (uint256); // Monthly usd amount spent in salaries
+  function calculatePayrollRunway() constant returns (uint256); // Days until the contract can run out of funds
+
+  /* EMPLOYEE ONLY */
+  function determineAllocation(address[] tokens, uint256[] distribution); // only callable once every 6 months
+  function payday(); // only callable once a month
+
+  /* ORACLE ONLY */
+  function setExchangeRate(address token, uint256 usdExchangeRate); // uses decimals from token
+}
+
+contract Payroll is PayrollInterface, TokenDestructible {}