Remove the vendor directory in .gitignore as these dependencies are needed for php-imap

plugins/php-imap/vendor/illuminate/contracts/Validation/ValidatorAwareRule.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Illuminate\Contracts\Validation;
+
+use Illuminate\Validation\Validator;
+
+interface ValidatorAwareRule
+{
+    /**
+     * Set the current validator.
+     *
+     * @param  \Illuminate\Validation\Validator  $validator
+     * @return $this
+     */
+    public function setValidator(Validator $validator);
+}