func Example() {
	log.SetOutput(&Logger{
		Filename:   "/var/log/myapp/foo.log",
		MaxSize:    500,  
		MaxBackups: 3,
		MaxAge:     28,    
		Compress:   true,  
	})
}
To use lumberjack with the standard library's log package, just pass it into
the SetOutput function when your application starts.
package lumberjack
import (
	"log"
)