新增最小版本号

upgradeInfo.json

@@ -8,5 +8,6 @@
     "ios_version": "2.1.0",
     "ios_version": "2.1.0",
     "ios_forceUpdate": false,
     "ios_forceUpdate": false,
     "ios_msg": "2.1.0相关内容",
     "ios_msg": "2.1.0相关内容",
-    "ios_url": "https://testflight.apple.com/join/nu4VISep"
+    "ios_url": "https://testflight.apple.com/join/nu4VISep",
+    "min_version": "2.3.4+2"
 }
 }