towerthousand: add my own main.go

Change-Id: I92815a46b1484f8d9c026bbf2908a37c339cf682
Reviewed-on: https://go-review.googlesource.com/136029
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>

towerthousand/main.go

diff --git a/towerthousand/main.go b/towerthousand/main.go
new file mode 100644
index 0000000..c05dd67
--- /dev/null
+++ b/towerthousand/main.go
@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("hello, towerthousand")
+}