paypro: minor fixes.

examples/PayPro/customer.js

@@ -258,7 +258,7 @@ function sendPayment(msg, callback) {
         // BIP-71
         'Accept': PayPro.PAYMENT_REQUEST_CONTENT_TYPE
           + ', ' + PayPro.PAYMENT_ACK_CONTENT_TYPE,
-        'Content-Type': 'application/bitcoin-payment',
+        'Content-Type': PayPro.PAYMENT_CONTENT_TYPE,
         'Content-Length': pay.length + '',
         'Content-Transfer-Encoding': 'binary'
       },

examples/PayPro/server.js

@@ -298,6 +298,7 @@ var peerman = new bitcore.PeerManager({
 
 peerman.peerDiscovery = true;
 
+peerman.addPeer(new bitcore.Peer('testnet-seed.alexykot.me', 18333));
 peerman.addPeer(new bitcore.Peer('testnet-seed.bitcoin.petertodd.org', 18333));
 peerman.addPeer(new bitcore.Peer('testnet-seed.bluematt.me', 18333));