README.md in deas-nm-0.3.0 vs README.md in deas-nm-0.4.0

@@ -60,9 +60,17 @@
 c.template_source "/path/to/templates" do |s|
   s.engine 'nm', Deas::Nm::TemplateEngine, 'handler_local' => 'view_handler'
 end
 ```
 
+Nm doesn't cache templates by default.  To enable caching, pass a `'cache'` option when registering:
+
+```ruby
+  c.template_source "/path/to/templates" do |s|
+    s.engine 'nm', Deas::Nm::TemplateEngine, 'cache' => true
+  end
+```
+
 ## Installation
 
 Add this line to your application's Gemfile:
 
     gem 'deas-nm'