Fix README. Also pass the current options object to loadContent() (#171)

Fixes #167

lib/proto/handle-response.js

@@ -52,7 +52,7 @@ module.exports = function(responseText, request, href, options) {
   this.state.options = options
 
   try {
-    this.loadContent(responseText, this.options)
+    this.loadContent(responseText, options)
   }
   catch (e) {
     trigger(document, "pjax:error", options)