fix mistake in README js should be javascripts
fix mistake in README js should be javascripts

tas50/supermarket,robbkidd/supermarket,rafaelmagu/supermarket,leftathome/supermarket,chef/supermarket,juliandunn/supermarket,tas50/supermarket,rafaelmagu/supermarket,rafaelmagu/supermarket,dpnl87/supermarket,juliandunn/supermarket,tas50/supermarket,jzohrab/supermarket,nellshamrell/supermarket,jzohrab/supermarket,nellshamrell/supermarket,tas50/supermarket,juliandunn/supermarket,robbkidd/supermarket,juliandunn/supermarket,leftathome/supermarket,chef/supermarket,robbkidd/supermarket,leftathome/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,chef/supermarket,rafaelmagu/supermarket,dpnl87/supermarket,dpnl87/supermarket,chef/supermarket,dpnl87/supermarket,leftathome/supermarket,robbkidd/supermarket,jzohrab/supermarket,jzohrab/supermarket,chef/supermarket