Added error logging

main.go

@@ -1,14 +1,21 @@
 package main
 
 import (
+	"log"
+	"math/rand"
+	"os"
+	"time"
+
 	"github.com/flygrounder/go-mtg-vk/vk"
 	"github.com/gin-gonic/gin"
-	"math/rand"
-	"time"
 )
 
 func main() {
 	rand.Seed(time.Now().UTC().UnixNano())
+	logFile, _ := os.OpenFile("logs/errors.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	defer logFile.Close()
+
+	log.SetOutput(logFile)
 	r := gin.Default()
 	r.POST("callback/message", vk.HandleMessage)
 	r.Run(":80")