feature(): add webpack build UMD, move package entry to dist/build.js, add Readme npm badge, add 'latest' babel-preset, update deps

Author: crobinson42

.babelrc

@@ -1,6 +1,3 @@
 {
-  "presets":["es2015"],
-  "plugins":[
-    "transform-object-rest-spread"
-  ]
+  "presets":["latest", "stage-1"]
 }

README.md

@@ -1,5 +1,8 @@
 # redux-axios-middleware
 
+[![npm version](https://badge.fury.io/js/redux-axios-middleware.svg)](https://badge.fury.io/js/redux-axios-middleware)
+
+
 Redux middleware for fetching data with axios HTTP client
 
 ## Installation
@@ -8,6 +11,9 @@ Redux middleware for fetching data with axios HTTP client
 npm i -S redux-axios-middleware
 ```
 
+> You can also use in browser via `<script src="https://unpkg.com/redux-axios-middleware@3.1.0/dist/bundle.js"></script>`, 
+the package will be available under namespace `ReduxAxiosMiddleware`
+
 ## How to use?
 
 ### Use middleware