Merge pull request #63 from klyngbaek/master

Emit an error event when something goes wrong...

Author: James Halliday

lib/request.js

@@ -31,6 +31,10 @@ var Request = module.exports = function (xhr, params) {
         true
     );
 
+    xhr.onerror = function(event) {
+        self.emit('error', new Error('Network error'));
+    };
+
     self._headers = {};
 
     if (params.headers) {
@@ -56,6 +60,10 @@ var Request = module.exports = function (xhr, params) {
     res.on('ready', function () {
         self.emit('response', res);
     });
+
+    res.on('error', function (err) {
+        self.emit('error', err);
+    });
 
     xhr.onreadystatechange = function () {
         // Fix for IE9 bug