Add task for adding template languages to all READMEs.

Rakefile

@@ -65,6 +65,25 @@ file 'doc/api/index.html' => FileList['lib/**/*.rb', 'README.*'] do |f|
 end
 CLEAN.include 'doc/api'
 
+# README ===============================================================
+task :add_template, [:name] do |t, args|
+  Dir.glob('README.*') do |file|
+    code = File.read(file)
+    if code =~ /^===.*#{args.name.capitalize}/
+      puts "Already covered in #{file}."
+    else
+      template = code[/===[^\n]*Liquid.*index\.liquid<\/tt>[^\n]*/m]
+      if !template
+        puts "Liquid not found in #{file}"
+      else
+        template = template.gsub(/Liquid/, args.name.capitalize).gsub(/liquid/, args.name.downcase)
+        code.gsub! '=== CoffeScript', template << "\n\n=== CoffeScript"
+        File.open(file, "w") { |f| f << code }
+      end
+    end
+  end
+end
+
 # PACKAGING ============================================================
 
 if defined?(Gem)