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

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

@@ -0,0 +1,25 @@
+<?php
+
+namespace Illuminate\Contracts\Validation;
+
+/**
+ * @deprecated see ValidationRule
+ */
+interface Rule
+{
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value);
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string|array
+     */
+    public function message();
+}