vdemario: add main.go for the GopherCon Contributing Workshop

Change-Id: Id3ee9ea5b7961fd31722961762f9e96503ce38aa
Reviewed-on: https://go-review.googlesource.com/48715
Reviewed-by: Kevin Burke <kev@inburke.com>
diff --git a/vdemario/main.go b/vdemario/main.go
new file mode 100644
index 0000000..0fb153e
--- /dev/null
+++ b/vdemario/main.go
@@ -0,0 +1,11 @@
+// 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("Come to GopherCon Brasil! From Nov 16th to 18th. https://gopherconbr.org/en")
+}