aschlesener: add main.go for Gophercon

Change-Id: If46d7cf66c4e8d963024deaa57b205e20b7eadf9
Reviewed-on: https://go-review.googlesource.com/48970
Reviewed-by: Jessie Frazelle <me@jessfraz.com>

aschlesener/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.
+
+// The aschlesener command prints something amazing.
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("my first Go contribution :D")
+}