reorganize examples into folder

contracts/examples/GoodArrayUse.sol

@@ -0,0 +1,21 @@
+import '../PullPaymentCapable.sol';
+
+contract GoodArrayUse is PullPaymentCapable {
+  address[] employees;
+  mapping(address => uint) bonuses;
+
+  function payBonus() {
+    for (uint i = 0; i < employees.length; i++) {
+			address employee = employees[i];
+			uint bonus = bonuses[employee];
+    	asyncSend(employee, bonus);
+    }
+  }
+
+	function calculateBonus(address employee) returns (uint) {
+    uint bonus = 0;
+    // some expensive computation...
+    bonuses[employee] = bonus;
+  }
+
+}