examples: add example to exercise random number generation

Signed-off-by: deadprogram <ron@hybridgroup.com>

src/examples/rand/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"time"
+)
+
+func main() {
+	var result [32]byte
+	for {
+		rand.Read(result[:])
+		encodedString := hex.EncodeToString(result[:])
+		println(encodedString)
+		time.Sleep(time.Second)
+	}
+}