Adding deprecate method. Thank you Polonium

lib/webrat/core_extensions/deprecate.rb

@@ -0,0 +1,8 @@
+class Module
+  def deprecate(old_method_name, new_method_name)
+    define_method old_method_name do |*args|
+      warn "#{old_method_name} is deprecated. Use #{new_method_name} instead."
+      __send__(new_method_name, *args)
+    end
+  end
+end