5-forms.md in activeadmin-1.0.0.pre3

- old
+ new

@@ -4,11 +4,11 @@
 a thin DSL on top of [Formtastic](https://github.com/justinfrench/formtastic):
 
 ```ruby
 ActiveAdmin.register Post do
 
-  form do |f|
+  form title: 'A custom title' do |f|
     inputs 'Details' do
       input :title
       input :published_at, label: "Publish Post At"
       li "Created at #{f.object.created_at}" unless f.object.new_record?
       input :category
@@ -58,10 +58,22 @@
 end
 ```
 
 This is a regular Rails partial so any template engine may be used.
 
+You can also use the `ActiveAdmin::FormBuilder` as builder in your Formtastic Form for use the same helpers are used in the admin file:
+
+```ruby
+  = semantic_form_for [:admin, @post], builder: ActiveAdmin::FormBuilder do |f|
+    = f.inputs "Details" do
+      = f.input :title
+    - f.has_many :taggings, sortable: :position, sortable_start: 1 do |t|
+      - t.input :tag
+    = f.actions
+
+```
+
 ## Nested Resources
 
 You can create forms with nested models using the `has_many` method, even if your model uses `has_one`:
 
 ```ruby
@@ -133,10 +145,10 @@
 
 This is particularly useful to display errors on virtual or hidden attributes.
 
 # Tabs
 
-You can arrage content in tabs as shown below:
+You can arrange content in tabs as shown below:
 
 ```ruby
   form do |f|
     tabs do
       tab 'Basic' do