delete main.js and about.js
modify index.html
change the index.html to my index.html code
new file in app controller
unused main.css
modify myYoApp to letusgoApp in app.js
add cartItemsList view
add cartPayList view
add cartgoryAdd view
add cartgoryModify view
delete about view
delete main view
delete about.js test
delete main.js test
add home view
add itemAdd view
add itemModify view
add itemsList view
my test of letusgo
change all myYoApp to letusgoApp