Simplified and modularized metadata processing

Change-Id: I63e78fd5994126c954263324bcfc2fd9d51e39ea
diff --git a/Readme.pod b/Readme.pod
index 149dab0..62662df 100644
--- a/Readme.pod
+++ b/Readme.pod
@@ -98,14 +98,16 @@
 Defaults to C<0>.
 This is I<experimental>.
 
-=item B<--human|-m>
+=item B<--meta|-m>
 
-Represent the data in an alternative human readible format.
-This is I<deprecated>.
+Define the metadata parser to use. Defaults to C<I5>.
+Metadata parsers can be defined in the C<KorAP::XML::Meta> namespace.
+This is I<experimental>.
 
 =item B<--pretty|-y>
 
 Pretty print JSON output. Defaults to C<false>.
+This is I<deprecated>.
 
 =item B<--gzip|-z>