create module visualdl

visualdl/backend/storage/storage.cpp

+//
+// Created by superjom on 17-11-16.
+//
+
+#include "storage.h"

visualdl/backend/storage/storage.h

+#ifndef VISUALDL_STORAGE_H
+#define VISUALDL_STORAGE_H
+
+class Storage {
+ public:
+  Storage& Global() {
+    static Storage* instance = new Storage();
+    return *instance;
+  }
+};
+
+#endif //VISUALDL_STORAGE_H