fix container configuration

there are a number of issues with the container configuration:

* the rezzza.bitter.class parameter was not defined
* there was a typo in either the config.yml or the first parameter to the rezzza.bitter service

Resources/config/bitter.xml

@@ -3,10 +3,13 @@
 <container xmlns="http://symfony.com/schema/dic/services"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
+    <parameters>
+        <parameter key="rezzza.bitter.class">Rezzza\BitterBundle\Bitter\Bitter</parameter>
+    </parameters>
 
     <services>
         <service id="rezzza.bitter" class="%rezzza.bitter.class%">
-            <argument type="service" id="rezzza.bitter.redis_client" />
+            <argument type="service" id="rezzza_bitter.redis_client" />
         </service>
     </services>