Update README.md

README.md

@@ -2,12 +2,42 @@
 
 [![Build Status](https://travis-ci.org/0xc14m1z/redux-reducer-generator.svg?branch=master)](https://travis-ci.org/0xc14m1z/redux-reducer-generator) [![Coverage Status](https://coveralls.io/repos/github/0xc14m1z/redux-reducer-generator/badge.svg?branch=master)](https://coveralls.io/github/0xc14m1z/redux-reducer-generator?branch=master) [![Maintainability](https://api.codeclimate.com/v1/badges/71529a56fad691ed2c10/maintainability)](https://codeclimate.com/github/0xc14m1z/redux-reducer-generator/maintainability)
 
-## DO NOT USE THIS PACKAGE, IT IS STILL IN DEVELOPMENT
-
 ## how to install
 
 ```
 $ npm install --save redux-reducer-generator
 ```
 
 ## how to use it
+
+The goal of this package is to shorten and lean the switch statement for
+redux reducers, replacing it with a map between action types and methods that
+handles those actions.
+
+```js
+
+import reducer from "redux-reducer-generator"
+// or var reducer = require("redux-reducer-generator")
+
+const initialState = {
+  loading: false,
+  errors: false
+}
+
+const SHOW_LOADER = "SHOW_LOADER"
+const HIDE_LOADER = "HIDE_LOADER"
+
+const showLoader = (state, action) =>
+  ({ ...state, loading: true })
+
+const hideLoader = (state, action) =>
+  ({ ...state, loading: false })
+
+const map = {
+  [SHOW_LOADER]: showLoader,
+  [HIDE_LOADER]: hideLoader
+}
+
+const loadingReducer = reducer(initialState, map)
+
+```