Updated the docs to use the static getter

Author: Schniz

doc/00 Guides/0 Overview.md

@@ -141,7 +141,7 @@ var App = React.createClass({
 // Finally we render a `Router` component with some `Route`s, it'll do all
 // the fancy routing stuff for us.
 React.render((
-  <Router history={history()}>
+  <Router history={history}>
     <Route path="/" component={App}>
       <Route path="about" component={About}/>
       <Route path="inbox" component={Inbox}/>
@@ -162,7 +162,7 @@ var routes = {
   ]
 };
 
-React.render(<Router history={history()} children={routes}/>, document.body);
+React.render(<Router history={history} children={routes}/>, document.body);
 ```
 
 Adding more UI
@@ -191,7 +191,7 @@ var Inbox = React.createClass({
 });
 
 React.render((
-  <Router history={history()}>
+  <Router history={history}>
     <Route component={App}>
       <Route path="about" component={About}/>
       <Route path="inbox" component={Inbox}>

doc/03 History/0 Histories.md

@@ -4,7 +4,7 @@ an instance of one with your own options for query parsing.
 
 ```js
 import { history } from 'react-router/lib/BrowserHistory';
-<Router history={history()}/>
+<Router history={history}/>
 ```
 
 If you need to do your own query parsing:

doc/03 History/BrowserHistory.md

@@ -46,7 +46,7 @@ import { Router } from 'react-router';
 import { history } from 'react-router/lib/BrowserHistory';
 
 React.render((
-  <Router history={ history() }>
+  <Router history={ history }>
     {/* ... */}
   </Router>
 ), document.body);

doc/03 History/HashHistory.md

@@ -36,7 +36,7 @@ import { Router } from 'react-router';
 import { history } from 'react-router/lib/HashHistory';
 
 React.render((
-  <Router history={history()}>
+  <Router history={history}>
     {/* ... */}
   </Router>
 ), document.body);