further example documentation

contracts/examples/SimpleSavingsWallet.sol

@@ -6,6 +6,11 @@ import "../ownership/Inheritable.sol";
 /**
  * @title SimpleSavingsWallet
  * @dev Simplest form of savings wallet that can be inherited if owner dies.
+ * In this example, we take a very simple savings wallet providing two operations
+ * (to send and receive funds) and extend its capabilities by making it Inheritable.
+ * The account that creates the contract is set as owner, who has the authority to
+ * choose an heir account. Heir account can reclaim the contract ownership in the
+ * case that the owner dies.
  */
 contract SimpleSavingsWallet is Inheritable {
 
@@ -31,4 +36,4 @@ contract SimpleSavingsWallet is Inheritable {
     payee.transfer(amount);
     Sent(payee, amount, this.balance);
   }
-}
\ No newline at end of file
+}