minor fixes to fith2co plotter
minor fixes to fith2co plotter

dinossimpson/pyspeckit,pyspeckit/pyspeckit,allisony/pyspeckit,keflavich/pyspeckit,low-sky/pyspeckit,pyspeckit/pyspeckit,bsipocz/pyspeckit,keflavich/pyspeckit-obsolete,e-koch/pyspeckit,jpinedaf/pyspeckit,bsipocz/pyspeckit,mikelum/pyspeckit,mikelum/pyspeckit,e-koch/pyspeckit,dinossimpson/pyspeckit,keflavich/pyspeckit,allisony/pyspeckit,vlas-sokolov/pyspeckit,vlas-sokolov/pyspeckit,jpinedaf/pyspeckit,low-sky/pyspeckit