Update README

README.md

@@ -19,19 +19,13 @@ In your Gemfile:
 For Rails 3:
 
 ```ruby
-gem "ransack"  # Last officially released gem (Rails 3)
+gem "ransack"
 ```
 
-Or if you want to use the bleeding edge (Rails 3):
+Or if you want to use the bleeding edge (Rails 3 and 4):
 
 ```ruby
-gem "ransack", :git => "git://github.com/ernie/ransack.git" # Track git repo (Rails 3)
-```
-
-For Rails 4, specify the "rails-4" branch:
-
-```ruby
-gem "ransack", github: "ernie/ransack", branch: "rails-4" # Use rails 4 branch
+gem "ransack", github: "ernie/ransack"  # Track git repo
 ```
 
 ## Usage
@@ -54,12 +48,12 @@ If you're coming from MetaSearch, things to note:
      is passed to it.
   3. Common ActiveRecord::Relation methods are no longer delegated by the search object.
      Instead, you will get your search results (an ActiveRecord::Relation in the case of
-     the ActiveRecord adapter) via a call to `Search#result`. If passed `:distinct => true`,
+     the ActiveRecord adapter) via a call to `Search#result`. If passed `distinct: true`,
      `result` will generate a `SELECT DISTINCT` to avoid returning duplicate rows, even if
      conditions on a join would otherwise result in some.
 
      Please note that for many databases, a sort on an associated table's columns will
-     result in invalid SQL with `:distinct => true` -- in those cases, you're on your own,
+     result in invalid SQL with `distinct: true` -- in those cases, you're on your own,
      and will need to modify the result as needed to allow these queries to work. Thankfully,
      9 times out of 10, sort against the search's base is sufficient, though, as that's
      generally what's being displayed on your results page.
@@ -69,7 +63,7 @@ In your controller:
 ```ruby
 def index
   @q = Person.search(params[:q])
-  @people = @q.result(:distinct => true)
+  @people = @q.result(distinct: true)
 end
 ```
 
@@ -101,7 +95,7 @@ This means you'll need to tweak your routes...
 ```ruby
 resources :people do
   collection do
-    match 'search' => 'people#search', :via => [:get, :post], :as => :search
+    match 'search' => 'people#search', via: [:get, :post], as: :search
   end
 end
 ```
@@ -118,8 +112,8 @@ end
 ... and update your `search_form_for` line in the view ...
 
 ```erb
-<%= search_form_for @q, :url => search_people_path,
-                        :html => {:method => :post} do |f| %>
+<%= search_form_for @q, url: search_people_path,
+                        html: { method: :post } do |f| %>
 ```
 
 Once you've done so, you can make use of the helpers in Ransack::Helpers::FormBuilder to
@@ -159,7 +153,7 @@ end
 class SupervisorsController < ApplicationController
   def index
     @search = Supervisor.search(params[:q])
-    @supervisors = @search.result(:distinct => true)
+    @supervisors = @search.result(distinct: true)
   end
 end
 ```