added encrypted keys to open wallet section of coinb.in

index.html

@@ -127,6 +127,8 @@
 															<button class="showKey btn btn-default" type="button">Show</button>
 														</span>
 													</div>
+													<label>Private Key (AES256 encrypted key)</label>
+													<input class="form-control privkeyaes" type="text" readonly>
 												</div>
 
 												<div id="walletSpend" class="hidden">