initial code (#6)

* initial code commit

logger/logger.go

@@ -0,0 +1,19 @@
+package logger
+
+import (
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func New(verbosity string) zerolog.Logger {
+	if verbosity == "" {
+		return log.Logger
+	}
+
+	level, err := zerolog.ParseLevel(verbosity)
+	if err != nil {
+		return log.Logger
+	}
+
+	return log.Level(level)
+}