add story and patch docs for #567

docs/row-selection.md

@@ -16,6 +16,7 @@
 * [onSelect](#onSelect)
 * [onSelectAll](#onSelectAll)
 * [hideSelectColumn](#hideSelectColumn)
+* [hideSelectAll](#hideSelectAll)
 * [selectionRenderer](#selectionRenderer)
 * [selectionHeaderRenderer](#selectionHeaderRenderer)
 
@@ -222,3 +223,13 @@ const selectRow = {
   bgColor: 'red'
 };
 ```
+
+### <a name='hideSelectAll'>selectRow.hideSelectAll - [Bool]</a>
+Default is `false`, if you don't want to render the select all checkbox on the header of selection column, give this prop as `true`!
+
+```js
+const selectRow = {
+  mode: 'checkbox',
+  hideSelectAll: true
+};
+```