Update README

Remove the debian-part in testing.

Author: Sebastian Gumprich

README.md

@@ -61,12 +61,9 @@ bundle exec thor kitchen:fetch-remote-tests
 # fast test on one machine
 bundle exec kitchen test default-ubuntu-1204
 
-# test on all machines except Debian-based machines
+# test on all machines
 bundle exec kitchen test
 
-# test on Debian-based machines
-KITCHEN_YAML=".kitchen_debian.yml" bundle exec kitchen test
-
 # for development
 bundle exec kitchen create default-ubuntu-1204
 bundle exec kitchen converge default-ubuntu-1204