[Luis] add coverage badge
[Luis] add coverage badge

MailOnline/VPAIDHTML5Client,MailOnline/VPAIDHTML5Client,mjamrozek/VPAIDHTML5Client,jdreetz/VPAIDHTML5Client,AltitudeDigital/VPAIDHTML5Client,AltitudeDigital/VPAIDHTML5Client,jdreetz/VPAIDHTML5Client