Merge pull request AsyncHttpClient#143 from casualjim/master

Adds support for PATCH and TRACE methods

Author: jfarcand

api/src/main/java/com/ning/http/client/AsyncHttpClient.java

@@ -523,6 +523,28 @@ public BoundRequestBuilder prepareDelete(String url) {
         return requestBuilder("DELETE", url);
     }
 
+    /**
+     * Prepare an HTTP client PATCH request.
+     *
+     * @param url A well formed URL.
+     * @return {@link RequestBuilder}
+     */
+    @SuppressWarnings("UnusedDeclaration")
+    public BoundRequestBuilder preparePatch(String url) {
+        return requestBuilder("PATCH", url);
+    }
+
+    /**
+     * Prepare an HTTP client TRACE request.
+     *
+     * @param url A well formed URL.
+     * @return {@link RequestBuilder}
+     */
+    @SuppressWarnings("UnusedDeclaration")
+    public BoundRequestBuilder prepareTrace(String url) {
+        return requestBuilder("TRACE", url);
+    }
+
     /**
      * Construct a {@link RequestBuilder} using a {@link Request}
      *