Adding support for timeout config

closes #56

lib/adapters/http.js

@@ -88,6 +88,11 @@ module.exports = function httpAdapter(resolve, reject, config) {
     reject(err);
   });
 
+  // Handle request timeout
+  req.setTimeout(config.timeout, function () {
+    req.abort();
+  });
+
   // Send the request
   req.end(data);
 };

lib/adapters/xhr.js

@@ -36,6 +36,9 @@ module.exports = function xhrAdapter(resolve, reject, config) {
   var request = new (XMLHttpRequest || ActiveXObject)('Microsoft.XMLHTTP');
   request.open(config.method.toUpperCase(), buildUrl(config.url, config.params), true);
 
+  // Set the request timeout in MS
+  request.timeout = config.timeout;
+
   // Listen for ready state
   request.onreadystatechange = function () {
     if (request && request.readyState === 4) {

lib/defaults.js

@@ -55,6 +55,8 @@ module.exports = {
     put: utils.merge(DEFAULT_CONTENT_TYPE)
   },
 
+  timeout: 0,
+
   xsrfCookieName: 'XSRF-TOKEN',
   xsrfHeaderName: 'X-XSRF-TOKEN'
 };