fix ActionMailer::Async docs and update to follow coding conventions

actionmailer/lib/action_mailer/async.rb

@@ -1,39 +1,41 @@
 require 'delegate'
 
-module ActionMailer::Async
-  def method_missing(method_name, *args)
-    if action_methods.include?(method_name.to_s)
-      QueuedMessage.new(queue, self, method_name, *args)
-    else
-      super
+module ActionMailer
+  module Async
+    def method_missing(method_name, *args)
+      if action_methods.include?(method_name.to_s)
+        QueuedMessage.new(queue, self, method_name, *args)
+      else
+        super
+      end
+    end
+
+    def queue
+      Rails.queue
+    end
+
+    class QueuedMessage < ::Delegator
+      attr_reader :queue
+
+      def initialize(queue, mailer_class, method_name, *args)
+        @queue        = queue
+        @mailer_class = mailer_class
+        @method_name  = method_name
+        @args         = args
+      end
+
+      def __getobj__
+        @actual_message ||= @mailer_class.send(:new, @method_name, *@args).message
+      end
+
+      def run
+        __getobj__.deliver
+      end
+
+      # Will push the message onto the Queue to be processed
+      def deliver
+        @queue << self
+      end
     end
   end
-
-  def queue
-    Rails.queue
-  end
-
-  class QueuedMessage < ::Delegator
-    attr_reader :queue
-
-    def initialize(queue, mailer_class, method_name, *args)
-      @queue        = queue
-      @mailer_class = mailer_class
-      @method_name  = method_name
-      @args         = args
-    end
-
-    def __getobj__
-      @actual_message ||= @mailer_class.send(:new, @method_name, *@args).message
-    end
-
-    def run
-      __getobj__.deliver
-    end
-
-    # Will push the message onto the Queue to be processed
-    def deliver
-      @queue << self
-    end
-  end
-end
+end

actionmailer/lib/action_mailer/base.rb

@@ -457,10 +457,11 @@ module ActionMailer #:nodoc:
       end
 
       # Will force ActionMailer to push new messages to the queue defined
-      # in the ActionMailer class when set to true
+      # in the ActionMailer class when set to true.
       #
       #   class WelcomeMailer < ActionMailer::Base
       #     self.async = true
+      #   end
       def async=(truth)
         if truth
           require 'action_mailer/async'
@@ -785,5 +786,4 @@ module ActionMailer #:nodoc:
 
     ActiveSupport.run_load_hooks(:action_mailer, self)
   end
-end
-
+end