diff --git a/lib/jammit-s3.rb b/lib/jammit-s3.rb
index a5ccc0a..796ad87 100644
--- a/lib/jammit-s3.rb
+++ b/lib/jammit-s3.rb
@@ -7,3 +7,38 @@ def self.upload_to_s3!(options = {})
     S3Uploader.new(options).upload
   end
 end
+
+if defined?(Rails)
+  module Jammit
+    class JammitRailtie < Rails::Railtie
+      initializer "set asset host and asset id" do
+        config.before_initialize do
+          if Jammit.configuration[:use_cloudfront] && Jammit.configuration[:cloudfront_cname].present? && Jammit.configuration[:cloudfront_domain].present?
+            asset_hostname = Jammit.configuration[:cloudfront_cname]
+            asset_hostname_ssl = Jammit.configuration[:cloudfront_domain]
+          elsif Jammit.configuration[:use_cloudfront] && Jammit.configuration[:cloudfront_domain].present?
+            asset_hostname = asset_hostname_ssl = Jammit.configuration[:cloudfront_domain]            
+          else
+            asset_hostname = asset_hostname_ssl = "#{Jammit.configuration[:s3_bucket]}.s3.amazonaws.com"
+          end
+
+          if Jammit.package_assets and asset_hostname.present?
+            puts "Initializing Cloudfront"                      
+            ActionController::Base.asset_host = Proc.new do |source, request|
+              if Jammit.configuration.has_key?(:ssl)
+                protocol = Jammit.configuration[:ssl] ? "https://" : "http://"
+              else
+                protocol = request.protocol
+              end
+              if request.protocol == "https://"
+                "#{protocol}#{asset_hostname_ssl}"
+              else 
+                "#{protocol}#{asset_hostname}"  
+              end              
+            end
+          end
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/jammit/s3_uploader.rb b/lib/jammit/s3_uploader.rb
index ecb577d..6fd377d 100644
--- a/lib/jammit/s3_uploader.rb
+++ b/lib/jammit/s3_uploader.rb
@@ -17,6 +17,16 @@ def initialize(options = {})
         @bucket_location = options[:bucket_location] || Jammit.configuration[:s3_bucket_location]
         @cache_control = options[:cache_control] || Jammit.configuration[:s3_cache_control]
         @acl = options[:acl] || Jammit.configuration[:s3_permission]
+        @use_cloud_front = options[:use_cloudfront] || Jammit.configuration[:use_cloudfront]
+        if @use_cloud_front
+          @changed_files = [] 
+          @cloudfront_id = options[:cloudfront_id] || Jammit.configuration[:cloudfront_id]
+        end
+
+        log "Using following config:"
+        log " - bucket: #{@bucket_name}"
+        log " - access_key: #{@access_key_id}"        
+        log " - cloudfront_id: #{@cloudfront_id}"                
 
         @bucket = find_or_create_bucket
         if Jammit.configuration[:use_cloudfront]
@@ -122,7 +132,7 @@ def find_or_create_bucket
     def invalidate_cache(files)
       paths = ""
       files.each do |key|
-        log "adding #{key} to list of invalidation requests"
+        log "adding /#{key} to list of invalidation requests"
         paths += "<Path>/#{key}</Path>"
       end
       digest = HMAC::SHA1.new(@secret_access_key)