更新版本号到2.2.0

Author: 詹强

example/package.json

@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "jcore-react-native": "1.5.0",
-    "jverification-react-native": "2.1.5",
+    "jverification-react-native": "2.2.0",
     "react": "16.8.6",
     "react-native": "0.60.5"
   },

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "license": "ISC",
   "author": "wicked.tc130",
-  "version": "2.1.5",
+  "version": "2.2.0",
   "repository": {
     "type": "git",
     "url": "https://github.com/jpush/jverification-react-native"