Added support for Rails 3

.gitignore

@@ -2,3 +2,4 @@
 **/*.swp
 pkg/*
 reference_pdfs
+.idea

lib/prawnto.rb

@@ -1,29 +1,31 @@
-$:.unshift(File.dirname(__FILE__)) unless
-$:.include?(File.dirname(__FILE__)) || $:.include?(File.expand_path(File.dirname(__FILE__)))
-
-module Prawnto
-  VERSION='0.0.3'
-  autoload :ActionControllerMixin, 'prawnto/action_controller_mixin'
-  autoload :ActionViewMixin, 'prawnto/action_view_mixin'
-  module TemplateHandlers
-    autoload :Base, 'prawnto/template_handlers/base'
-    autoload :Dsl, 'prawnto/template_handlers/dsl'
-    autoload :Raw, 'prawnto/template_handlers/raw'
-  end
-
-  module TemplateHandler
-    autoload :CompileSupport, 'prawnto/template_handler/compile_support'
-  end
-
-  class << self
-    def enable
-      ActionController::Base.send :include, Prawnto::ActionControllerMixin
-      ActionView::Base.send :include, Prawnto::ActionViewMixin
-      Mime::Type.register "application/pdf", :pdf
-      ActionView::Template.register_template_handler 'prawn', Prawnto::TemplateHandlers::Base
-      ActionView::Template.register_template_handler 'prawn_dsl', Prawnto::TemplateHandlers::Dsl
-      ActionView::Template.register_template_handler 'prawn_xxx', Prawnto::TemplateHandlers::Raw  
-    end
-  end
-end
-
+$:.unshift(File.dirname(__FILE__)) unless
+$:.include?(File.dirname(__FILE__)) || $:.include?(File.expand_path(File.dirname(__FILE__)))
+
+module Prawnto
+  VERSION='0.0.4'
+  autoload :ActionControllerMixin, 'prawnto/action_controller_mixin'
+  autoload :ActionViewMixin, 'prawnto/action_view_mixin'
+  module TemplateHandlers
+    autoload :Base, 'prawnto/template_handlers/base'
+    autoload :Dsl, 'prawnto/template_handlers/dsl'
+    autoload :Raw, 'prawnto/template_handlers/raw'
+  end
+
+  module TemplateHandler
+    autoload :CompileSupport, 'prawnto/template_handler/compile_support'
+  end
+
+  class << self
+    def enable
+      ActionController::Base.send :include, Prawnto::ActionControllerMixin
+      ActionView::Base.send :include, Prawnto::ActionViewMixin
+      Mime::Type.register "application/pdf", :pdf
+      ActionView::Template.register_template_handler 'prawn', Prawnto::TemplateHandlers::Base
+      ActionView::Template.register_template_handler 'prawn_dsl', Prawnto::TemplateHandlers::Dsl
+      ActionView::Template.register_template_handler 'prawn_xxx', Prawnto::TemplateHandlers::Raw  
+    end
+  end
+
+  require "prawnto/railtie"
+end
+

lib/prawnto/railtie.rb

@@ -0,0 +1,9 @@
+if defined?(Rails) && defined?(Rails::Railtie)
+  module Prawnto
+    class Railtie < Rails::Railtie
+      initializer 'prawnto.init_config' do
+        Prawnto.enable
+      end
+    end
+  end
+end

rails/init.rb

@@ -1,6 +1,4 @@
 require 'prawnto'
-if defined? Rails && defined? RAILS_ROOT && defined? Prawn
+if defined?(Rails) && defined?(Rails.root) && defined?(Prawn)
     Prawnto.enable
-else
-  throw "Should be enabled only if Rails && Prawn are both defined"
 end