fix: improve mobile browser compatible

add babel-plugin-transform-runtime

close gitalk#25

Author: booxood

.babelrc

@@ -4,5 +4,8 @@
     "es2015",
     "stage-2",
     "react"
+  ],
+  "plugins": [
+    "transform-runtime"
   ]
 }

package.json

@@ -24,6 +24,7 @@
     "babel-eslint": "7.2.3",
     "babel-jest": "20.0.3",
     "babel-loader": "7.1.1",
+    "babel-plugin-transform-runtime": "6.23.0",
     "babel-preset-es2015": "6.24.1",
     "babel-preset-react": "6.24.1",
     "babel-preset-stage-2": "6.24.1",