Initial heck-in.

src/test/resources/org/gitlab4j/api/approvals.json

+{
+  "id": 5,
+  "iid": 5,
+  "project_id": 1,
+  "title": "Approvals API",
+  "description": "Test",
+  "state": "opened",
+  "created_at": "2016-06-08T00:19:52.638Z",
+  "updated_at": "2016-06-08T21:20:42.470Z",
+  "merge_status": "can_be_merged",
+  "approvals_required": 2,
+  "approvals_missing": 1,
+  "approved_by": [
+    {
+      "user": {
+        "name": "Administrator",
+        "username": "root",
+        "id": 1,
+        "state": "active",
+        "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80\u0026d=identicon",
+        "web_url": "http://localhost:3000/u/root"
+      }
+    },
+    {
+      "user": {
+        "name": "Nico Cartwright",
+        "username": "ryley",
+        "id": 2,
+        "state": "active",
+        "avatar_url": "http://www.gravatar.com/avatar/cf7ad14b34162a76d593e3affca2adca?s=80\u0026d=identicon",
+        "web_url": "http://localhost:3000/u/ryley"
+      }
+    }
+  ]
+}
\ No newline at end of file