Merge pull request #405 from androolloyd/fix/396-make-decimals-uint8-in-token-example

changed decimal to be uint8 so that it matches the ERC20 specification.

contracts/examples/SimpleToken.sol

@@ -6,7 +6,7 @@ import "../token/StandardToken.sol";
 
 /**
  * @title SimpleToken
- * @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator. 
+ * @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator.
  * Note they can later distribute these tokens as they wish using `transfer` and other
  * `StandardToken` functions.
  */
@@ -14,12 +14,12 @@ contract SimpleToken is StandardToken {
 
   string public constant name = "SimpleToken";
   string public constant symbol = "SIM";
-  uint256 public constant decimals = 18;
+  uint8 public constant decimals = 18;
 
   uint256 public constant INITIAL_SUPPLY = 10000;
 
   /**
-   * @dev Contructor that gives msg.sender all of existing tokens. 
+   * @dev Contructor that gives msg.sender all of existing tokens.
    */
   function SimpleToken() {
     totalSupply = INITIAL_SUPPLY;