Update stack navigator docs

Author: satya164

docs/native-stack-navigator.md

@@ -94,6 +94,14 @@ String that can be used as a fallback for `headerTitle`.
 
 Whether to show or hide the header for the screen. The header is shown by default. Setting this to `false` hides the header.
 
+#### `headerHideBackButton`
+
+Boolean indicating whether to hide the elevation shadow on the header. Only supported on Android.
+
+#### `headerHideShadow`
+
+Boolean indicating whether to hide the elevation shadow on the header. Only supported on Android.
+
 #### `headerTitle`
 
 String to be used by the header as title string. Defaults to scene `title`.
@@ -149,13 +157,23 @@ Whether you can use gestures to dismiss this screen. Defaults to `true` on iOS,
 
 #### `presentation`
 
-How should the screen be presented. Available options:
+How should the screen be presented. Possible options:
 
 - `modal`
 - `transparentModal`
 - `push`
 
-Defaults to `push`. Only supported on iOS.
+Defaults to `push`.
+
+#### `animation`
+
+How should the screen be animated. Possible options:
+
+- `default`
+- `fade`
+- `none`
+
+Only supported on `Android`.
 
 ### Events
 

docs/stack-navigator.md

@@ -175,6 +175,15 @@ Whether to show or hide the header for the screen. The header is shown by defaul
 
 String or a function that returns a React Element to be used by the header. Defaults to scene `title`. When a function is specified, it receives `allowFontScaling`, `onLayout`, `style` and `children` as the arguments. The title string is passed in `children`.
 
+#### `headerTitleAlign`
+
+How to align the the header title. Possible values:
+
+- `left`
+- `center`
+
+Defaults to `center` on iOS and `left` on Android.
+
 #### `headerTitleAllowFontScaling`
 
 Whether header title font should scale to respect Text Size accessibility settings. Defaults to false.

website/versioned_docs/version-4.x/stack-navigator-2.0.md

@@ -222,6 +222,15 @@ Whether to show or hide the header for the screen. The header is shown by defaul
 
 String or a function that returns a React Element to be used by the header. Defaults to scene `title`. When a function is specified, it receives `allowFontScaling`, `onLayout`, `style` and `children` as the arguments. The title string is passed in `children`.
 
+#### `headerTitleAlign`
+
+How to align the the header title. Possible values:
+
+- `left`
+- `center`
+
+Defaults to `center` on iOS and `left` on Android.
+
 #### `headerTitleAllowFontScaling`
 
 Whether header title font should scale to respect Text Size accessibility settings. Defaults to false.