Add version badge in readme

sunnylqm · web-flow · commit cf8d999c0f18 · 2018-10-30T14:36:19.000+08:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-### react-native-root-toast
+## react-native-root-toast [![npm version](https://badge.fury.io/js/react-native-root-toast.svg)](http://badge.fury.io/js/react-native-root-toast)
 
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Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-### react-native-root-toast`
	`1`	`+## react-native-root-toast [![npm version](https://badge.fury.io/js/react-native-root-toast.svg)](http://badge.fury.io/js/react-native-root-toast)`
`2`	`2`
`3`	`3`	`-----------------------`
`4`	`4`