update dependencies

package.json

 {
   "name": "react-native-picker",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "description": "react-native-picker",
   "main": "index.js",
   "scripts": {
@@ -19,7 +19,7 @@
     "email": "wenliang.web@gmail.com"
   },
   "dependencies": {
-    "react-native-picker-android": "~0.2.5"
+    "react-native-picker-android": "~0.3.2"
   },
   "engines": {
     "node": ">=4"