Shared link expiration backend

Redirect from sign in page when user is logged
Updated README.md

app/Http/Requests/Share/CreateShareRequest.php

@@ -28,6 +28,7 @@ class CreateShareRequest extends FormRequest
             'isPassword' => 'required|boolean',
             'unique_id'  => 'required|integer',
             'type'       => 'required|string',
+            'expiration' => 'integer|nullable',
             'permission' => 'string',
             'password'   => 'string',
         ];

app/Http/Requests/Share/UpdateShareRequest.php

@@ -27,6 +27,7 @@ class UpdateShareRequest extends FormRequest
         return [
             'protected'  => 'required|boolean',
             'permission' => 'nullable|string',
+            'expiration' => 'integer|nullable',
             'password'   => 'string',
         ];
     }