Updated README

Added documentation for the new feature (additional URI), used by the menu options. These are used for assigning different pages to the same menu option, so when they are clicked, they will stay as `class="active"`

README.md

@@ -8,7 +8,7 @@ Rendering is based on `dmstr/yii2-adminlte-asset` menu widget.
 
 The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
-> Note: Check the [composer.json](https://packagist.org/packages/esempla/yii2-rbac) for this extension's requirements and dependencies.
+>__Note__ Check the [composer.json](https://packagist.org/packages/esempla/yii2-rbac) for this extension's requirements and dependencies.
 Read this [web tip /wiki](https://packagist.org/packages/esempla/yii2-rbac) on setting the `minimum-stability` settings for your application's composer.json.
 
 Either run
@@ -66,7 +66,31 @@ a string or an array of strings.
 
 ## Menus management
 
-To access Dynamic Menu management, go to app route `/menu/dynamic-menu`
+>__Note__ To access Dynamic Menu management, go to app route `/menu/dynamic-menu`.
+> In that page there is a dedicated setup for configuring the sidebar menu. 
+
+These are the options you will see (Edit item):
+* text | the label text of the menu option
+* URL | the url that the menu option will redirect the page to
+* additional URI | see description below
+* target | HTML, specifies where will the URL be shown (check HTML docs)
+* tooltip
+* visibility condition | specified role (or roles) that can see the menu option
+
+#### DESCRIPTION
+If you want to add more than one URI (let's say that in your action you rendere a different view based on a specific action, eg: based on the current date, role of the user, permissions, etc...),
+you can do that, by adding more than one URL, using the additional URI text area.
+_When adding multiple URI, it's important to note that there is no separator to distinguish them._
+So the only rule used to distinguish them is by adding a different URI in a new line (don't add literally a `\n`!)
+> For example:
+> ```
+>                 ┌──────────────────────────────┐
+> additional URI: │ /controller/action           │
+>                 │ /default                     │
+>                 └──────────────────────────────┘
+> ```
+> __Note__
+> Remember **NOT** to put the `''` or the `""` for the URI and the URL!
 
 ### Item fields