Added re-sign comment

Author: brainwallet

index.html

@@ -237,7 +237,7 @@ <h3><span class="pull-right" id="qr_addr"></span></h3>
                         <input class="span4" id="txDest" type="text"> 
                         <div class="input-prepend"> <span class="add-on">BTC</span><input class="span2" id="txValue" type="text"> 
                         </div><span class="help-inline errormsg"></span> 
-                        <button class="btn" id="txRebuild" type="button">Re-sign</button> 
+                        <button class="btn" id="txRebuild" type="button" title="Note: ECDSA signatures require a random number which means signing the same data twice results in different sigs.">Re-sign</button> 
                         <button class="btn" id="txSend" type="button">Send Transaction</button> 
                     </div>
                 </div>