config: drop the "conf" prefix for config files.

.gitignore

@@ -5,6 +5,7 @@ node_modules/
 
 cache/
 app/config/conf.local.yml
+app/config/local.yml
 
 # Ignore transpiled files
 

app/library/Services.php

@@ -65,8 +65,8 @@ class Services extends DiDefault
         // The priority is files defined AFTER another
         // will override settings if there a multiple keys.
         $files = array(
-            'conf.app.yml',
+            'app.yml',
-            'conf.local.yml'
+            'local.yml'
         );
 
         $basePath = APP_PATH . '/app/config/';