Merge pull request bitcoin#1234 from benthecarman/patch-2

Clarify BIP 322 seralization requires a signed transaction

Author: kallewoof

bip-0322.mediawiki

@@ -74,7 +74,7 @@ The <code>to_sign</code> transaction is:
     vout[0].nValue = 0
     vout[0].scriptPubKey = OP_RETURN
 
-A full signature consists of the base64-encoding of the <code>to_sign</code> transaction in standard network serialisation.
+A full signature consists of the base64-encoding of the <code>to_sign</code> transaction in standard network serialisation once it has been signed.
 
 === Full (Proof of Funds) ===