Some incomplete initial code

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

cmd/image.go

@@ -0,0 +1,26 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hairyhenderson/go-onerng"
+	"github.com/spf13/cobra"
+)
+
+// imageCmd represents the image command
+func imageCmd(ctx context.Context) *cobra.Command {
+	return &cobra.Command{
+		Use:   "image",
+		Short: "Dump the OneRNG's firmware image",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			o := onerng.OneRNG{Path: opts.Device}
+			image, err := o.Image(ctx)
+			if err != nil {
+				return err
+			}
+			fmt.Printf("%q\n", image)
+			return nil
+		},
+	}
+}