Thresholds checked it there is a value in lowInventoryWarningThreshold
README Updated
Updated README
Delete notfound.html
Recommit proper case

Fixes #47
Refactored Meteor.app.shop, cart sessions

Fixes #46
Fixes #35
UI Enhancements for cartDrawer
Collections autoValues
Implement fast-render
Remove header_spy, use absolute url to recognize shop domain

TODO:
Fix cross platform, multi session cart behaviour