fix(git): add vendor in .gitignore

vendor/github.com/gin-gonic/gin/deprecated.go

@@ -1,21 +0,0 @@
-// Copyright 2014 Manu Martinez-Almeida.  All rights reserved.
-// Use of this source code is governed by a MIT style
-// license that can be found in the LICENSE file.
-
-package gin
-
-import (
-	"log"
-
-	"github.com/gin-gonic/gin/binding"
-)
-
-// BindWith binds the passed struct pointer using the specified binding engine.
-// See the binding package.
-func (c *Context) BindWith(obj interface{}, b binding.Binding) error {
-	log.Println(`BindWith(\"interface{}, binding.Binding\") error is going to
-	be deprecated, please check issue #662 and either use MustBindWith() if you
-	want HTTP 400 to be automatically returned if any error occur, or use
-	ShouldBindWith() if you need to manage the error.`)
-	return c.MustBindWith(obj, b)
-}