Merge pull request react-navigation#69 from LastxTemplar/patch-1

Added missing 'from'

Author: vonovak

docs/connecting-navigation-prop.md

@@ -8,7 +8,7 @@ sidebar_label: Access the navigation prop from any component
 
 ```javascript
 import React from 'react';
-import { Button } 'react-native';
+import { Button } from 'react-native';
 import { withNavigation } from 'react-navigation';
 
 export default class MyBackButton extends React.Component {
@@ -26,7 +26,7 @@ Alternatively, you can use the `withNavigation` function to provide the `navigat
 
 ```js
 import React from 'react';
-import { Button } 'react-native';
+import { Button } from 'react-native';
 import { withNavigation } from 'react-navigation';
 
 class MyBackButton extends React.Component {
@@ -40,4 +40,4 @@ class MyBackButton extends React.Component {
 export default withNavigation(MyBackButton);
 ```
 
-Using this approach, you can render `MyBackButton` anywhere in your app without passing in a `navigation` prop explicitly and it will work as expected.
+Using this approach, you can render `MyBackButton` anywhere in your app without passing in a `navigation` prop explicitly and it will work as expected.