progress on batches

lib/http/http.dart

@@ -43,4 +43,24 @@ class Http {
     logger.i(response.data.toString());
     return response.data;
   }
+
+  Future<dynamic> put(String url, dynamic data) async {
+    Map<String, String> headers = {'Content-Type': 'application/json'};
+
+    Response response;
+    response = await dio.put(
+      baseUrl + url,
+      data: data,
+      options: Options(headers: headers),
+    );
+    logger.i(response.data.toString());
+    return response.data;
+  }
+
+  Future<dynamic> delete(String url) async {
+    Response response;
+    response = await dio.delete(baseUrl + url);
+    logger.i(response.data.toString());
+    return response.data;
+  }
 }