Documentation for new version of CIT plugin

This documents the relevant changes on the new CIT plugin
implementation.
Signed-off-by: NJan Richter <jarichte@redhat.com>
Signed-off-by: NCleber Rosa <crosa@redhat.com>

examples/varianter_cit/params.cit

 PARAMETERS
-color   [black,  gold, red, green ]
+color[black,  gold, red, green ]
 shape[square, triangle, circle]
 state[liquid, solid, gas]
 material[leather, plastic, aluminum]