fixes. emit broadcast event.

lib/bitcoind.js

@@ -20,6 +20,10 @@ var bitcoin = Bitcoin;
 function Bitcoin(options) {
   var self = this;
 
+  if (Bitcoin.global) {
+    throw new Error('bitcoindjs cannot be instantiated more than once.');
+  }
+
   if (!(this instanceof Bitcoin)) {
     return new Bitcoin(options);
   }
@@ -27,6 +31,8 @@ function Bitcoin(options) {
   EventEmitter.call(this);
 
   this.options = options;
+
+  Bitcoin.global = this;
 }
 
 Bitcoin.prototype.__proto__ = EventEmitter.prototype;
@@ -464,22 +470,31 @@ Transaction.broadcast = function(tx, options, callback) {
     options = {};
   }
 
-  options.overrideFees = options.overrideFees || false;
+  var fee = options.overrideFees = options.overrideFees || false;
-  options.ownOnly = options.ownOnly || false;
+  var own = options.ownOnly = options.ownOnly || false;
+
+  if (!callback) {
+    callback = function() {};
+  }
 
   if (!tx.hex) {
     tx = bitcoin.tx(tx);
     tx.toHex();
   }
 
-  return bitcoindjs.broadcastTx(tx,
+  return bitcoindjs.broadcastTx(tx, fee, own, function(err, hash) {
-    options.overrideFees,
+    if (err) return callback(err);
-    options.ownOnly,
+    bitcoin.global.emit('broadcast', hash);
-    callback);
+    return callback(null, err);
+  });
 };
 
-Transaction.prototype.broadcast = function(callback) {
+Transaction.prototype.broadcast = function(options, callback) {
-  return Transaction.broadcast(this, callback);
+  if (!callback) {
+    callback = options;
+    options = null;
+  }
+  return Transaction.broadcast(this, options, callback);
 };
 
 /**