add button image

project.private.config.json

@@ -2,6 +2,23 @@
   "description": "项目私有配置文件。此文件中的内容将覆盖 project.config.json 中的相同字段。项目的改动优先同步到此文件中。详见文档：https://developers.weixin.qq.com/miniprogram/dev/devtools/projectconfig.html",
   "projectname": "meng",
   "setting": {
-    "compileHotReLoad": true
-  }
+    "compileHotReLoad": true,
+    "urlCheck": true,
+    "coverView": true,
+    "lazyloadPlaceholderEnable": false,
+    "skylineRenderEnable": false,
+    "preloadBackgroundData": false,
+    "autoAudits": false,
+    "useApiHook": true,
+    "useApiHostProcess": true,
+    "showShadowRootInWxmlPanel": true,
+    "useStaticServer": false,
+    "useLanDebug": false,
+    "showES6CompileOption": false,
+    "checkInvalidKey": true,
+    "ignoreDevUnusedFiles": true,
+    "bigPackageSizeSupport": false
+  },
+  "libVersion": "3.10.1",
+  "condition": {}
 }