Update README.md

README.md

@@ -44,7 +44,7 @@ The very basic steps can be simple `include comptoir`.
 
 If you are using Apache, this setup is possible :
 
-```
+```ruby
 class { 'comptoir':
   trusted_hosts      => '^comptoir.example.org$',
   app_secret        => 'ThisIsMySecetUsedToGenerateCSRFTokens',