document disableKeyboardHandling for stack

Author: Jarvis Luong

docs/stack-navigator.md

@@ -50,6 +50,7 @@ Options for the router:
 * `navigationOptions` - Navigation options for the navigator itself, to configure a parent navigator
 * `defaultNavigationOptions` - Default navigation options to use for screens
 * `paths` - A mapping of overrides for the paths set in the route configs
+* `disableKeyboardHandling` - If true, the keyboard will NOT automatically dismiss when navigating to a new screen. Defaults to false. This is ignored in the web platform.
 
 Visual options:
 

website/versioned_docs/version-2.x/stack-navigator.md

@@ -50,6 +50,7 @@ Options for the router:
 * `initialRouteKey` - Optional identifier of the initial route
 * `navigationOptions` - Default navigation options to use for screens
 * `paths` - A mapping of overrides for the paths set in the route configs
+* `disableKeyboardHandling` - If true, the keyboard will NOT automatically dismiss when navigating to a new screen. Defaults to false. This is ignored in the web platform.
 
 Visual options:
 

website/versioned_docs/version-3.x/stack-navigator.md

@@ -51,6 +51,7 @@ Options for the router:
 - `navigationOptions` - Navigation options for the navigator itself, to configure a parent navigator
 - `defaultNavigationOptions` - Default navigation options to use for screens
 * `paths` - A mapping of overrides for the paths set in the route configs
+* `disableKeyboardHandling` - If true, the keyboard will NOT automatically dismiss when navigating to a new screen. Defaults to false. This is ignored in the web platform.
 
 Visual options: