updated readme to include js dependancies
updated readme to include js dependancies

tzi/calendar,attribution/calendar,attribution/calendar,danieljacobarcher/calendar,nicholasleblanc/calendar,KonishiLee/calendar,FelixZhang00/calendar,theodorejb/calendar,theodorejb/calendar,KonishiLee/calendar,Magicline/calendar,nicholasleblanc/calendar,Magicline/calendar,Baremetrics/calendar,danieljacobarcher/calendar,FelixZhang00/calendar,tzi/calendar,Baremetrics/calendar