Change in SCart

From April 2020, in order to change comprehensively and develop into a professional source code, SCart has the following adjustments:

- Change github location from https://github.com/lanhktc/s-cart to https://github.com/s-cart/s-cart
- Change package addresses from https://packagist.org/packages/lanhktc/s-cart to https://packagist.org/packages/s-cart/s-cart

So:

- Version: Reset version number
- Install SCart via composer using composer create-project s-cart/s-cart
- Source from github lanhktc/scart stops supporting.