add note about sql debug to pod

README.pod

@@ -85,6 +85,12 @@ called C<dns> then uncomment the two indicated lines in C<NodeIP.pm>.
 Remember you can disable authentication by changing a setting in the
 configuration file, as explained above.
 
+For SQL debugging, and better performance, try the following command:
+
+ DBIC_TRACE_PROFILE=console DBIC_TRACE=1 \
+   plackup -R Netdisco/lib,Netdisco/public,Netdisco/views \
+   Netdisco/bin/netdisco-web.pl
+
 =head1 FUTURE WORK
 
 At the moment the ability to just hit Enter in the title-bar Search is a