fixes for StandardToken

contracts/examples/ExampleToken.sol

@@ -0,0 +1,32 @@
+pragma solidity ^0.4.0;
+
+import "../StandardToken.sol";
+
+contract ExampleToken is StandardToken {
+
+    string public name = "ExampleToken";
+    string public symbol = "TOK";
+    uint public decimals = 18;
+
+    // 1 ether = 500 example tokens 
+    uint PRICE = 500;
+    
+
+    function () payable {
+        createTokens(msg.sender);
+    }
+    
+    function createTokens(address recipient) payable {
+        if (msg.value == 0) throw;
+    
+        uint tokens = safeMul(msg.value, getPrice());
+
+        totalSupply = safeAdd(totalSupply, tokens);
+        balances[recipient] = safeAdd(balances[recipient], tokens);
+    }
+    
+    // replace this with any other price function
+    function getPrice() constant returns (uint result){
+      return PRICE;
+    }
+}