added gettings roles features

src/Permission.php

@@ -457,4 +457,25 @@ public function getAbilities($module = null)
 
         return null;
     }
+
+    /**
+     * get all roles
+     *
+     * @return mixed
+     */
+    public function roles()
+    {
+        return $this->permission->getRoles();
+    }
+
+    /**
+     * getting a single role
+     *
+     * @param $role
+     * @return mixed
+     */
+    public function role($role)
+    {
+        return $this->permission->getRole($role);
+    }
 }

src/Permissions/Permission.php

@@ -34,4 +34,5 @@ public function getPermissionArrayAttribute()
     {
         return json_to_array($this->permission);
     }
+
 }

src/Permissions/PermissionRepository.php

@@ -32,4 +32,26 @@ public function syncRolePermissions($role, array $data)
 
         return $this->model->insert($data);
     }
+
+
+    /**
+     * get all roles
+     *
+     * @return mixed
+     */
+    public function getRoles()
+    {
+        return $this->model->all();
+    }
+
+    /**
+     * getting a single role
+     *
+     * @param $role
+     * @return mixed
+     */
+    public function getRole($role)
+    {
+        return $this->model->where('role_name', $role)->first();
+    }
 }

src/Users/Permitable.php

@@ -44,4 +44,5 @@ public function permission()
     {
         return $this->belongsTo('Nahid\Permit\Permissions\Permission', config('permit.users.role_column'), 'role_name');
     }
+
 }