updated Windows App Store JS tutorial based on the latest changes in the SDK
updated Windows App Store JS tutorial based on the latest changes in the SDK

hamzawi06/docs,Catografix/docs,Annyv2/docs,Annyv2/docs,khorne3/docs,sandrinodimattia/docs,sandrinodimattia/docs,yvonnewilson/docs,hamzawi06/docs,auth0/docs,auth0/docs,khorne3/docs,sandrinodimattia/docs,jeffreylees/docs,jeffreylees/docs,auth0/docs,Catografix/docs,miparnisari/docs,hamzawi06/docs,yvonnewilson/docs,Annyv2/docs,Catografix/docs,yvonnewilson/docs,khorne3/docs,jeffreylees/docs