use constant InfoLevel instead of 255

writer.go

diff --git a/writer.go b/writer.go
index 5768892..f74d2aa 100644
--- a/writer.go
+++ b/writer.go
@@ -7,7 +7,7 @@
 )
 
 func (logger *Logger) Writer() *io.PipeWriter {
-	return logger.WriterLevel(255)
+	return logger.WriterLevel(InfoLevel)
 }
 
 func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {