Changing share to singleton

[frezno]

With Laravel 5.4 the share method has been deprecated so we have to change it using the singleton method.

[odinns]

I tried to apply this pull request as a patch (using https://github.com/cweagans/composer-patches), and then upgrading Laravel to 5.4, but one more change is needed - that the composer.json require section is updated for 5.4.

Probably this will do:

    "require": {
        "php": ">=5.4.0",
        "illuminate/support": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*",
        "illuminate/validation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*",
        "illuminate/translation": "5.0.*|5.1.*|5.2.*|5.3.*|5.4.*"
    },

However this will not take effect as a patch, so I hope that this will be merged soon :-)

[frezno]

you can add my fork as repository to your composer.json file to make it work.
After adding it, run composer update and the pull requests will be added as well:

excerpt of the modified composer.json:
`

"type": "project",
"repositories": [
    {
        "type": "vcs",
        "url": "https://github.com/frezno/laravelshoppingcart"
    }
],
"require": {
    "php": ">=5.6.4",
    "laravel/framework": "5.4.*",
    "laravel/tinker": "~1.0",
    "darryldecode/cart": "dev-master"
},

`

[branchzero]

@darryldecode Could you have a time to review it and get it merged. So the package can be used in laravel 5.4. Thank you :)

[frezno]

@branchzero you can use my fix as shown above or you can use my fork of this cart as shown here:
https://github.com/frezno/freznocart
I didn't change anything in this fork but make it Laravel 5.4 compatibel.

[branchzero]

@frezno Okay，I will have a try, thank you!

[darryldecode]

Thanks! 👍