add simple support for accessing have_tag, have_selector and have_xpath matchers from rspec proper

lib/webrat/rspec-rails.rb

@@ -0,0 +1,13 @@
+# Supports using the matchers in controller, helper, and view specs if you're
+# using rspec-rails. Just add a require statement to spec/spec_helper.rb:
+# 
+#   require 'webrat/rspec-rails'
+#
+require "webrat/core/matchers"
+
+Spec::Runner.configure do |config|
+  # rspec should support :type => [:controller, :helper, :view] - but until it does ...
+  config.include(Webrat::Matchers, :type => :controller)
+  config.include(Webrat::Matchers, :type => :helper)
+  config.include(Webrat::Matchers, :type => :view)
+end