Update Readme.md

Author: workgena

README.md

@@ -1,63 +1,81 @@
-# ActiveAdminSidebar
+# ActiveAdmin Sidebar
 
-Provides ability to manipulate sidebar position with activeadmin (tested with activeadmin ~> 1.0.0.pre)
+Provides ability to manipulate sidebar position for ActiveAdmin (tested with ActiveAdmin ~> 1.0.0)
 
+## Install
 
-Add including of css file 
+```ruby
+gem 'active_admin_sidebar'
+# or latest from GitHub
+gem 'active_admin_sidebar', git: 'https://github.com/activeadmin-plugins/active_admin_sidebar.git'
+```
+
+Add including of CSS file
 
 ```scss
-  @import "active_admin_sidebar"; 
+  @import "active_admin_sidebar";
 ```
 
 to the  
-``` 
-app/assets/stylesheets/active_admin.css.scss 
+```
+app/assets/stylesheets/active_admin.css.scss
 ```
 
 And including of coffee file (optional, need only for collapsed sidebar)
 
-```js
-  //= require active_admin_sidebar
+```coffeescript
+  #= require active_admin_sidebar
 ```
 
 to the  
-``` 
+
+```scss
 app/assets/javascripts/active_admin.js
 ```
 
-Changing sidebar position dynamically with before_filter
+# Configuration per resource
+
+Changing sidebar position dynamically with before_action
+
 ```ruby
   # app/admin/posts.rb
   ActiveAdmin.register Post do
-    before_filter :left_sidebar!, only: [:show]
+    before_action :left_sidebar!, only: [:show]
   end
 
   # app/admin/comments.rb
   ActiveAdmin.register Comment do
-    before_filter :right_sidebar!
+    before_action :right_sidebar!
   end
 ```
 
+## Global configuration
 
-Moving sidebar to the left within all resource (config/initializers/active_admin.rb)
+Moving sidebar to the left within all resource. Set configuration in `config/initializers/active_admin.rb`
 
 ```ruby
-  # == Controller Filters
+  # == Controller before-actions
   #
-  # You can add before, after and around filters to all of your
-  # Active Admin resources from here.
-  #
-  config.before_filter do
-    left_sidebar! if respond_to?(:left_sidebar!)
-  end 
+  # You can add before, after and around actions to all of your resources
+  ActiveAdmin.setup do |config|
+    config.before_action do
+      left_sidebar! if respond_to?(:left_sidebar!)
+    end
+  end
 ```
 
-Also you can use sidebar collapsing. It will add css icon in title of first sidebar will save current state in session
+## Collapsing sidebar
+
+You can use sidebar collapsing.
+It will add "hide/show" button. Shown/Hidden state is persisted across all pages.
+
 ```ruby
   left_sidebar!(collapsed: true)
 ```
-You can override button color according to your color theme:
-```css
+
+You can override button color according to your color theme. For example:
+
+```scss
   body.active_admin {
     #active_admin_content.left_sidebar, #active_admin_content.collapsed_sidebar {
       .collapse_btn, .uncollapse_btn {
@@ -70,8 +88,3 @@ You can override button color according to your color theme:
 Example
 
 ![Alt text](https://raw.githubusercontent.com/activeadmin-plugins/active_admin_sidebar/master/screen/sidebar.jpg "Example")
-
-
-
-
-