Docs: Add `wp_add_dashboard_widget()` parameter descriptions.

Props meitar for initial patch.
Fixes #36092.
Built from https://develop.svn.wordpress.org/trunk@36868


git-svn-id: http://core.svn.wordpress.org/trunk@36835 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/dashboard.php

@@ -130,14 +130,17 @@ function wp_dashboard_setup() {
 }
 
 /**
+ * Adds a new dashboard widget.
  *
  * @global array   $wp_dashboard_control_callbacks
  *
- * @param string   $widget_id
- * @param string   $widget_name
- * @param callable $callback
- * @param callable $control_callback
- * @param array    $callback_args
+ * @param string   $widget_id        Widget ID  (used in the 'id' attribute for the widget).
+ * @param string   $widget_name      Title of the widget.
+ * @param callable $callback         Function that fills the widget with the desired content.
+ *                                   The function should echo its output.
+ * @param callable $control_callback Optional. Function that outputs controls for the widget. Default null.
+ * @param array    $callback_args    Optional. Data that should be set as the $args property of the widget array
+ *                                   (which is the second parameter passed to your callback). Default null.
  */
 function wp_add_dashboard_widget( $widget_id, $widget_name, $callback, $control_callback = null, $callback_args = null ) {
 	$screen = get_current_screen();

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta2-36867';
+$wp_version = '4.5-beta2-36868';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.