update gitignore
update gitignore

armanforghani/spectrum,GerHobbelt/spectrum,maurojs25/spectrum,shawinder/spectrum,kotmatpockuh/spectrum,safareli/spectrum,Rise-Vision/spectrum,shawinder/spectrum,c9s/spectrum,maurojs25/spectrum,armanforghani/spectrum,inscriptionweb/spectrum,ginlime/spectrum,hakimel/slides-spectrum,inscriptionweb/spectrum,CodeLoversAt/spectrum,safareli/spectrum,ajssd/spectrum,GerHobbelt/spectrum,bgrins/spectrum,bgrins/spectrum,ginlime/spectrum,baiyanghese/slides-spectrum,ajssd/spectrum,liitii/spectrum,liitii/spectrum,kotmatpockuh/spectrum