Merge pull request #1928 from trotzig/master

Fix and add some documentation about query params

Author: knowbody

UPGRADE_GUIDE.md

@@ -258,7 +258,7 @@ and where you get it now if you're a route component (`this.props`)
 | `getPath()`     | `location.pathname+location.query` |
 | `getPathname()` | `location.pathname`                |
 | `getParams()`   | `params`                           |
-| `getQuery()`    | `query`                            |
+| `getQuery()`    | `location.query`                            |
 | `getRoutes()`   | `routes`                           |
 | `isActive(to, params, query)` | `history.isActive(pathname, query, onlyActiveOnIndex)` |
 

docs/introduction/README.md

@@ -221,6 +221,8 @@ const Message = React.createClass({
 })
 ```
 
+You can also access parameters from the query string. If you for instance visit `/foo?bar=baz`, you can access `this.props.location.query.bar` to get the value `"baz"` from your Route component. 
+
 That's the gist of React Router. Application UIs are boxes inside of boxes inside of boxes; now you can keep those boxes in sync with the URL and link to them easily.
 
 The docs about [route configuration](/docs/basics/RouteConfiguration.md) describe more of the router's features in depth.