jda/main: hello, world! and gophercon

Change-Id: I054d24117938a50d6ea98d72f04e02521f020c65
Reviewed-on: https://go-review.googlesource.com/48713
Reviewed-by: Chris Broadfoot <cbro@golang.org>
Run-TryBot: Chris Broadfoot <cbro@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

jda/main.go

@@ -0,0 +1,12 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello from Jade!")
+	fmt.Println("Gophercon was/is/will be amazing.")
+}