updated docs - refs #401, 402

@@ -101,6 +101,18 @@ casper.test.begin("Planning 4 tests", 4, function(test) {
 
 Last, all the casper test suites have been upgraded to use the new testing features, you may want to have a look at the changes.
 
+#### Request abortion
+
+When using PhantomJS >=1.9.0, you can now abort outgoing requests:
+
+```js
+casper.on('page.resource.requested', function(requestData, request) {
+    if (requestData.url.indexOf('http://adserver.com') === 0) {
+        request.abort();
+    }
+});
+```
+
 ### Bugfixes & enhancements
 
 - heavy lifting of casperjs bootstrap script

@@ -273,6 +273,18 @@ Emitted when the HTTP response corresponding to current required url has been re
 
 Emitted when a new HTTP request is performed to open the required url.
 
+.. versionadded:: 1.1
+
+**Arguments:** ``requestData, request``
+
+You can also abort requests::
+
+    casper.on('page.resource.requested', function(requestData, request) {
+        if (requestData.url.indexOf('http://adserver.com') === 0) {
+            request.abort();
+        }
+    });
+
 ``popup.created``
 ~~~~~~~~~~~~~~~~~