updates readme and renames unique indexes

Author: denismitr

README.md

@@ -26,6 +26,12 @@ Then if you need to use one of the provided middleware, you can add a `auth.grou
 ```
 This one insures that user belongs to all required auth groups
 
+### Publish config and migrations
+```bash
+php artisan vendor:publish
+```
+and pick `Provider: Denismitr\Permissions\PermissionsServiceProvider` from the list
+
 ### Migration
 
 Then run `php artisan migrate` and the following _5_ tables will be created:

migrations/create_laravel_permissions.php

@@ -46,7 +46,7 @@ public function up()
                 ->on('auth_groups')
                 ->onDelete('cascade');
 
-            $table->unique(['permission_id', 'auth_group_id']);
+            $table->unique(['permission_id', 'auth_group_id'], 'lp_agp_unique');
         });
 
         Schema::create('auth_group_users', function (Blueprint $table) {
@@ -65,7 +65,7 @@ public function up()
                 ->on('users')
                 ->onDelete('cascade');
 
-            $table->unique(['user_id', 'auth_group_id']);
+            $table->unique(['user_id', 'auth_group_id'], 'lp_agu_unique');
         });
 
         Schema::create('auth_group_user_permissions', function (Blueprint $table) {
@@ -84,7 +84,7 @@ public function up()
                 ->on('permissions')
                 ->onDelete('cascade');
 
-            $table->unique(['auth_group_user_id', 'permission_id']);
+            $table->unique(['auth_group_user_id', 'permission_id'], 'lp_agup_unique');
         });
 
         Schema::table(config('permissions.tables.users'), function (Blueprint $table) {