feat:修改file的配置项

Author: pedro

app/extensions/file/config.js

@@ -1,5 +1,12 @@
 'use strict';
 
 module.exports = {
-  file_store_dir: 'assets'
+  file: {
+    storeDir: 'assets',
+    singleLimit: 1024 * 1024 * 2,
+    totalLimit: 1024 * 1024 * 20,
+    nums: 10,
+    exclude: []
+    // include:[]
+  }
 };