Merge pull request #55 from alister/patch-1

kernel.cache_warmer & fixing service definition

Author: spolischook

Resources/config/html_purifier.xml

@@ -4,8 +4,9 @@
     xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
     <services>
         <service id="exercise_html_purifier.cache_warmer.serializer" class="Exercise\HTMLPurifierBundle\CacheWarmer\SerializerCacheWarmer" public="false">
-            <argument key="$paths">%exercise_html_purifier.cache_warmer.serializer.paths%</argument>
+            <argument>%exercise_html_purifier.cache_warmer.serializer.paths%</argument>
             <argument type="service" id="HTMLPurifier" />
+            <tag name="kernel.cache_warmer" />
         </service>
 
         <service id="exercise_html_purifier.form.text_type_extension" class="Exercise\HTMLPurifierBundle\Form\TypeExtension\HTMLPurifierTextTypeExtension" public="false">