Update vendor

vendor/github.com/labstack/echo/cookbook/graceful-shutdown/graceful/server.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/labstack/echo"
+	"github.com/tylerb/graceful"
+)
+
+func main() {
+	// Setup
+	e := echo.New()
+	e.GET("/", func(c echo.Context) error {
+		return c.String(http.StatusOK, "Sue sews rose on slow joe crows nose")
+	})
+	e.Server.Addr = ":1323"
+
+	// Serve it like a boss
+	graceful.ListenAndServe(e.Server, 5*time.Second)
+}