Add support for illuminate/support versions 6, 7 and 8 (#6)

* Support for Laravel 6, 7 and 8
* Add back support for Laravel 5

Author: sLIDe5

composer.json

@@ -9,7 +9,7 @@
     ],
     "require": {
         "php": ">=7.0",
-        "illuminate/support": "~5.0",
+        "illuminate/support": "^5.0|^6.0|^7.0|^8.0",
         "mockery/mockery": "~1.0"
     },
     "require-dev": {
@@ -29,7 +29,7 @@
     "extra": {
         "laravel": {
             "providers": [
-                "Briedis\\ApiBuilder\\ApiBuilderLaravel5ServiceProvider"
+                "Briedis\\ApiBuilder\\ApiBuilderLaravelServiceProvider"
             ]
         }
     }

src/Briedis/ApiBuilder/ApiBuilderLaravel5ServiceProvider.php

@@ -0,0 +1,11 @@
+<?php namespace Briedis\ApiBuilder;
+
+use Illuminate\Support\ServiceProvider;
+
+class ApiBuilderLaravelServiceProvider extends ServiceProvider
+{
+    public function boot()
+    {
+        $this->loadViewsFrom(__DIR__ . '/../../views/', 'api-builder');
+    }
+}

src/Briedis/ApiBuilder/ApiBuilderLaravelServiceProvider.php

@@ -3,9 +3,6 @@
 
 namespace Briedis\ApiBuilder;
 
-
-use Illuminate\Support\Str;
-
 class MethodGroup
 {
     /**