Update example to use sequelize v4 about express-example

[randomor]

As a first time user of Sequelize.js, I do find the v4 documentation very lacking on the ES6 part. The main repo issue sequelize/sequelize#6524 was often referred as documentation while it reads as a proposal. There are several questions a new user has to answer:

• How to do the ES6 class syntax with instance/class method?
• How to organize the files in their own directory and be imported in one index.js
• How to do the sequelize.import?

Since this repo is linked by the main repo, I think it will be very helpful if someone who has successfully used ES6 and V4 to redo this example.

[shaishab]

I have created a project using Express and Sequelize v4 and used PostgreSQL as database. The project link

https://github.com/shaishab/sequelize-express-example

[tvl83]

I came here for an example of v5 and it's for 3x. Very disappointing that it's linked from docs and not updated. :(

[n-davis]

Up vote.

[rolele]

It would be great because of the breaking changes from v3 to v4.
Many comments on the internet does not work anymore with the current version of sequelize.

[ShGKme]

Sequelize 5 is coming, but there is no express example for sequelize 4?

[papb]

Modern example created with Sequelize v6, finally 🎉