Update default config.rb to be a bit more modern

middleman-core/lib/middleman-core/templates/shared/config.tt

@@ -24,10 +24,9 @@
 #   page "/admin/*"
 # end
 
-# Proxy (fake) files
-# page "/this-page-has-no-template.html", :proxy => "/template-file.html" do
-#   @which_fake_page = "Rendering a fake page with a variable"
-# end
+# Proxy pages (http://middlemanapp.com/dynamic-pages/)
+# proxy "/this-page-has-no-template.html", "/template-file.html", :locals => {
+#  :which_fake_page => "Rendering a fake page with a local variable" }
 
 ###
 # Helpers
@@ -36,8 +35,7 @@
 # Automatic image dimensions on image_tag helper
 # activate :automatic_image_sizes
 
-# Enable middleman-livereload
-# First: add it to your Gemfile and run bundle install
+# Reload the browser automatically whenever files change
 # activate :livereload
 
 # Methods defined in the helpers block are available in templates
@@ -77,7 +75,7 @@ configure :build do
   # activate :minify_javascript
 
   # Enable cache buster
-  # activate :cache_buster
+  # activate :asset_hash
 
   # Use relative URLs
   # activate :relative_assets