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diff --git a/vendor/rails/actionpack/lib/action_controller/mime_type.rb b/vendor/rails/actionpack/lib/action_controller/mime_type.rb
new file mode 100644
index 0000000..6923a13
--- /dev/null
+++ b/vendor/rails/actionpack/lib/action_controller/mime_type.rb
@@ -0,0 +1,204 @@
+require 'set'
+
+module Mime
+  SET              = []
+  EXTENSION_LOOKUP = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
+  LOOKUP           = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
+
+  # Encapsulates the notion of a mime type. Can be used at render time, for example, with:
+  #
+  #   class PostsController < ActionController::Base
+  #     def show
+  #       @post = Post.find(params[:id])
+  #
+  #       respond_to do |format|
+  #         format.html
+  #         format.ics { render :text => post.to_ics, :mime_type => Mime::Type["text/calendar"]  }
+  #         format.xml { render :xml => @people.to_xml }
+  #       end
+  #     end
+  #   end
+  class Type
+    @@html_types = Set.new [:html, :all]
+    cattr_reader :html_types
+
+    # These are the content types which browsers can generate without using ajax, flash, etc
+    # i.e. following a link, getting an image or posting a form.  CSRF protection
+    # only needs to protect against these types.
+    @@browser_generated_types = Set.new [:html, :url_encoded_form, :multipart_form, :text]
+    cattr_reader :browser_generated_types
+
+
+    @@unverifiable_types = Set.new [:text, :json, :csv, :xml, :rss, :atom, :yaml]
+    def self.unverifiable_types
+      ActiveSupport::Deprecation.warn("unverifiable_types is deprecated and has no effect", caller)
+      @@unverifiable_types
+    end
+
+    # A simple helper class used in parsing the accept header
+    class AcceptItem #:nodoc:
+      attr_accessor :order, :name, :q
+
+      def initialize(order, name, q=nil)
+        @order = order
+        @name = name.strip
+        q ||= 0.0 if @name == Mime::ALL # default wilcard match to end of list
+        @q = ((q || 1.0).to_f * 100).to_i
+      end
+
+      def to_s
+        @name
+      end
+
+      def <=>(item)
+        result = item.q <=> q
+        result = order <=> item.order if result == 0
+        result
+      end
+
+      def ==(item)
+        name == (item.respond_to?(:name) ? item.name : item)
+      end
+    end
+
+    class << self
+      def lookup(string)
+        LOOKUP[string]
+      end
+
+      def lookup_by_extension(extension)
+        EXTENSION_LOOKUP[extension]
+      end
+
+      # Registers an alias that's not used on mime type lookup, but can be referenced directly. Especially useful for
+      # rendering different HTML versions depending on the user agent, like an iPhone.
+      def register_alias(string, symbol, extension_synonyms = [])
+        register(string, symbol, [], extension_synonyms, true)
+      end
+
+      def register(string, symbol, mime_type_synonyms = [], extension_synonyms = [], skip_lookup = false)
+        Mime.instance_eval { const_set symbol.to_s.upcase, Type.new(string, symbol, mime_type_synonyms) }
+
+        SET << Mime.const_get(symbol.to_s.upcase)
+
+        ([string] + mime_type_synonyms).each { |string| LOOKUP[string] = SET.last } unless skip_lookup
+        ([symbol.to_s] + extension_synonyms).each { |ext| EXTENSION_LOOKUP[ext] = SET.last }
+      end
+
+      def parse(accept_header)
+        if accept_header !~ /,/
+          [Mime::Type.lookup(accept_header)]
+        else
+          # keep track of creation order to keep the subsequent sort stable
+          list = []
+          accept_header.split(/,/).each_with_index do |header, index| 
+            params, q = header.split(/;\s*q=/)       
+            if params
+              params.strip!          
+              list << AcceptItem.new(index, params, q) unless params.empty?
+            end
+          end
+          list.sort!
+
+          # Take care of the broken text/xml entry by renaming or deleting it
+          text_xml = list.index("text/xml")
+          app_xml = list.index(Mime::XML.to_s)
+
+          if text_xml && app_xml
+            # set the q value to the max of the two
+            list[app_xml].q = [list[text_xml].q, list[app_xml].q].max
+
+            # make sure app_xml is ahead of text_xml in the list
+            if app_xml > text_xml
+              list[app_xml], list[text_xml] = list[text_xml], list[app_xml]
+              app_xml, text_xml = text_xml, app_xml
+            end
+
+            # delete text_xml from the list
+            list.delete_at(text_xml)
+
+          elsif text_xml
+            list[text_xml].name = Mime::XML.to_s
+          end
+
+          # Look for more specific XML-based types and sort them ahead of app/xml
+
+          if app_xml
+            idx = app_xml
+            app_xml_type = list[app_xml]
+
+            while(idx < list.length)
+              type = list[idx]
+              break if type.q < app_xml_type.q
+              if type.name =~ /\+xml$/
+                list[app_xml], list[idx] = list[idx], list[app_xml]
+                app_xml = idx
+              end
+              idx += 1
+            end
+          end
+
+          list.map! { |i| Mime::Type.lookup(i.name) }.uniq!
+          list
+        end
+      end
+    end
+    
+    def initialize(string, symbol = nil, synonyms = [])
+      @symbol, @synonyms = symbol, synonyms
+      @string = string
+    end
+    
+    def to_s
+      @string
+    end
+    
+    def to_str
+      to_s
+    end
+    
+    def to_sym
+      @symbol || @string.to_sym
+    end
+
+    def ===(list)
+      if list.is_a?(Array)
+        (@synonyms + [ self ]).any? { |synonym| list.include?(synonym) }
+      else
+        super
+      end
+    end
+    
+    def ==(mime_type)
+      return false if mime_type.blank?
+      (@synonyms + [ self ]).any? do |synonym| 
+        synonym.to_s == mime_type.to_s || synonym.to_sym == mime_type.to_sym 
+      end
+    end
+
+    # Returns true if Action Pack should check requests using this Mime Type for possible request forgery.  See
+    # ActionController::RequestForgeryProtection.
+    def verify_request?
+      browser_generated?
+    end
+
+    def html?
+      @@html_types.include?(to_sym) || @string =~ /html/
+    end
+
+    def browser_generated?
+      @@browser_generated_types.include?(to_sym)
+    end
+
+    private
+      def method_missing(method, *args)
+        if method.to_s =~ /(\w+)\?$/
+          $1.downcase.to_sym == to_sym
+        else
+          super
+        end
+      end
+  end
+end
+
+require 'action_controller/mime_types'