Added permission system

app/Role.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Oxbow;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Role extends Model
+{
+    /**
+     * The roles that belong to the role.
+     */
+    public function users()
+    {
+        return $this->belongsToMany('Oxbow\User');
+    }
+
+    /**
+     * The permissions that belong to the role.
+     */
+    public function permissions()
+    {
+        return $this->belongsToMany('Oxbow\Permission');
+    }
+
+    /**
+     * Add a permission to this role.
+     * @param Permission $permission
+     */
+    public function attachPermission(Permission $permission)
+    {
+        $this->permissions()->attach($permission->id);
+    }
+
+}