Moved middleware in a package

Signed-off-by: Vishal Rana <vr@labstack.com>

middleware/logger.go

@@ -0,0 +1,35 @@
+package echo
+
+import (
+	"log"
+	"time"
+
+	"github.com/labstack/echo"
+	"github.com/labstack/gommon/color"
+)
+
+func Logger(h echo.HandlerFunc) echo.HandlerFunc {
+	return func(c *echo.Context) error {
+		start := time.Now()
+		if err := h(c); err != nil {
+			c.Error(err)
+		}
+		end := time.Now()
+		m := c.Request.Method
+		p := c.Request.URL.Path
+		n := c.Response.Status()
+		col := color.Green
+
+		switch {
+		case n >= 500:
+			col = color.Red
+		case n >= 400:
+			col = color.Yellow
+		case n >= 300:
+			col = color.Cyan
+		}
+
+		log.Printf("%s %s %s %s", m, p, col(n), end.Sub(start))
+		return nil
+	}
+}