Added info on cmdline html export to --help option
Added info on cmdline html export to --help option

Signed-off-by: Jared Jennings <ad0460cb04d67eb39a9c46471c88e93819177116@src.gnome.org>

tomboy-notes/tomboy,rotty3000/tomboy,MatteoNardi/Tomboy,rotty3000/tomboy,rotty3000/tomboy,MatteoNardi/Tomboy,tomboy-notes/tomboy,rotty3000/tomboy,MatteoNardi/Tomboy,rotty3000/tomboy,tomboy-notes/tomboy,MatteoNardi/Tomboy,tomboy-notes/tomboy,MatteoNardi/Tomboy,tomboy-notes/tomboy,MatteoNardi/Tomboy