Added utf8 encoding

ygopro-webhook.js

@@ -155,6 +155,7 @@ http.createServer(function (req, res) {
 		return return_error(res, "Webhook "+hook+" not found.");
 	}
 	var info = "";
+	req.setEncoding("utf8");
 	req.addListener('data', function(chunk) {
 		info += chunk;
 	})