changes to readme.md
changes to readme.md

added a line about using qr code for events

dusty-wil/ReadyResponder,moritzsternemann/ReadyResponder,dusty-wil/ReadyResponder,david135/lims,david135/lims,houhoulis/ReadyResponder,pcai/lims,david135/lims,houhoulis/ReadyResponder,houhoulis/ReadyResponder,moritzsternemann/ReadyResponder,ReadyResponder/ReadyResponder,kgf/lims,kgf/lims,ReadyResponder/ReadyResponder,pcai/lims,david135/lims,moritzsternemann/ReadyResponder,pcai/lims,dusty-wil/ReadyResponder,moritzsternemann/ReadyResponder,ReadyResponder/ReadyResponder,kgf/lims,pcai/lims,houhoulis/ReadyResponder,dusty-wil/ReadyResponder,ReadyResponder/ReadyResponder,kgf/lims