Move RnD sample programs to examples dir, rename test_data to example_data, add stubs for server and client

cmd/doll-master/main.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"doll/internal/log"
+	"fmt"
+	"net/http"
+)
+
+func main() {
+	// Register http-request handler.
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "Doll-master here!")
+	})
+
+	// And run server on 8240 port.
+	log.Info("Starting server at port 8240")
+
+	if err := http.ListenAndServe(":8240", nil); err != nil {
+		log.Fatalf("Error starting the server: %s", err)
+	}
+}
+
+/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */