renamed

cmd/downscale/main.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"image/jpeg"
+	"image/png"
+	"os"
+)
+
+func main() {
+	// open image
+	img, err := jpeg.Decode(os.Stdin)
+	if err != nil {
+		panic(err)
+	}
+	// no pre-processing needed so we just
+	// write image
+	err = png.Encode(os.Stdout, Downscaled{img, 3})
+	if err != nil {
+		panic(err)
+	}
+}