Add updated <Provider /> docs (reduxjs#1015)

* Add updated Provider docs

* Add Provider documentation

* Update formatting

docs/api/Provider.md

@@ -0,0 +1,75 @@
+# `<Provider />`
+
+## Overview
+
+The `<Provider />` makes the Redux `store` available to any nested components that have been wrapped in the `connect()` function. 
+
+Since any React component in a React-Redux app can be connected, most applications will render a `<Provider>` at the top level, with the entire app’s component tree inside of it.
+
+Normally, you can’t use a connected component unless it is nested inside of a `<Provider>` .
+
+Note: If you really need to, you can manually pass `store` as a prop to a connected component, but we only recommend to do this for stubbing `store` in unit tests, or in non-fully-React codebases. Normally, you should just use `<Provider>`.
+
+### Props
+
+`store` (Redux Store)
+The single Redux `store` in your application.
+
+`children` (ReactElement) 
+The root of your component hierarchy. 
+
+
+### Example Usage
+
+In the example below, the `<App />` component is our root-level component. This means it’s at the very top of our component hierarchy. 
+
+**Vanilla React Example** 
+
+```js
+    import React from 'react';
+    import ReactDOM from 'react-dom';
+    import { Provider } from 'react-redux';
+
+    import { App } from './App';
+    import createStore from './createReduxStore';
+
+    const store = createStore();
+
+    ReactDOM.render(
+      <Provider store={store}>
+        <App />
+      </Provider>,
+      document.getElementById('root')
+    )
+```    
+
+
+**Usage with React Router**
+
+```js
+    import React from 'react';
+    import ReactDOM from 'react-dom';
+    import { Provider } from 'react-redux';
+    import { Router, Route } from 'react-router-dom';
+
+    import { App } from './App';
+    import { Foo } from './Foo';
+    import { Bar } from './Bar';
+    import createStore from './createReduxStore';
+
+    const store = createStore();
+
+    ReactDOM.render(
+      <Provider store={store}>
+        <Router history={history}>
+          <Route path="/" component={App}>
+            <Route path="foo" component={Foo}/>
+            <Route path="bar" component={Bar}/>
+          </Route>
+        </Router>
+      </Provider>,
+      document.getElementById('root')
+    )
+```    
+
+