Initial commit (#149).

src/test/resources/org/gitlab4j/api/merge-request-note.json

+{
+  "id": 301,
+  "body": "Comment for MR",
+  "author": {
+    "id": 1,
+    "username": "pipin",
+    "email": "admin@example.com",
+    "name": "Pip",
+    "state": "active",
+    "created_at": "2013-09-30T13:46:01Z"
+  },
+  "created_at": "2013-10-02T08:57:14Z",
+  "updated_at": "2013-10-02T08:57:14Z",
+  "system": false,
+  "noteable_id": 2,
+  "noteable_type": "MergeRequest",
+  "noteable_iid": 2
+}
\ No newline at end of file