jshint fixes
jshint fixes

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