Added space to example code

docs/introduction-to-smart-contracts.rst

@@ -20,9 +20,11 @@ Storage
 
     contract SimpleStorage {
         uint storedData;
+
         function set(uint x) {
             storedData = x;
         }
+
         function get() constant returns (uint retVal) {
             return storedData;
         }
@@ -88,10 +90,12 @@ registering with username and password - all you need is an Ethereum keypair.
         function Coin() {
             minter = msg.sender;
         }
+
         function mint(address receiver, uint amount) {
             if (msg.sender != minter) return;
             balances[receiver] += amount;
         }
+
         function send(address receiver, uint amount) {
             if (balances[msg.sender] < amount) return;
             balances[msg.sender] -= amount;