dl: add go1.11beta3

Change-Id: If1e946924e81f19f7bcfc367581e1c11397c45f6
Reviewed-on: https://go-review.googlesource.com/127817
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/go1.11beta3/main.go b/go1.11beta3/main.go
new file mode 100644
index 0000000..860e117
--- /dev/null
+++ b/go1.11beta3/main.go
@@ -0,0 +1,24 @@
+// Copyright 2018 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 go1.11beta3 command runs the go command from go1.11beta3.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.11beta3
+//     $ go1.11beta3 download
+//
+// And then use the go1.11beta3 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/go1.11beta3
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.11beta3")
+}