[api] Support for HEAD. Fixes #2

Author: indexzero

lib/mock-request.js

@@ -97,6 +97,17 @@ MockRequest.prototype.get = function (path, headers) {
   return this.request('GET', path, null, headers);
 };
 
+//
+// ### function head (path, headers)
+// #### @path {string} Path to expect in this mock request.
+// #### @headers {Object} **Optional** Headers to expect in this mock request.
+// Appends a new `HEAD` request to the sequence of mock `request/response` pairs
+// managed by this instance.
+//
+MockRequest.prototype.get = function (path, headers) {
+  return this.request('HEAD', path, null, headers);
+};
+
 //
 // ### function post (path, body, headers)
 // #### @path {string} Path to expect in this mock request.