feature: add batch search (#15)

* bump version to 0.3.0 for new feature

* add batch process

* add batch address search

and increase coverage test to 60%

Author: nandiheath

babel.config.js

@@ -1,9 +1,9 @@
 module.exports = {
   env: {
     development: {
-      presets: [
-        '@vue/app'
-      ],
+      // presets: [
+      //   '@vue/app'
+      // ],
       // To allow commonjs module.exports and require syntax work probably
       // Seems vue-cli 3.0.3 onwards there will be error if not specify this
       // https://github.com/vuejs/vue-cli/issues/2675