[5.4] Updates for Laravel 5.4

[reganjohnson]

This is a WIP as there are breaking changes to 5.3 and below. I will be adding in version checking to the affected methods, however, this can be used with 5.4 in its' current state.

[reganjohnson]

Seems there are some other PR's in progress. Feel free to cannibalize any elements from this.

In the meantime, I have a working VCS going for 5.4 development using the following composer.json settings:

{
    "require": {
            "proengsoft/laravel-jsvalidation": "^1.6.0-dev"
    },
    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/reganjohnson/laravel-jsvalidation"
        }
    ]
}