pkg: hide it by moving to _pkg.dev

The idea here is to preserve the history of `dev` branch development and its
code when merging with the `master`. Later this code could be moved into the
masters code where appropriate.

_pkg.dev/wire/payload/mgetaddr_test.go

@@ -0,0 +1,24 @@
+package payload
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/CityOfZion/neo-go/pkg/wire/util/Checksum"
+
+	"github.com/CityOfZion/neo-go/pkg/wire/command"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewGetAddr(t *testing.T) {
+
+	getAddrMessage, err := NewGetAddrMessage()
+	assert.Equal(t, nil, err)
+
+	assert.Equal(t, command.GetAddr, getAddrMessage.Command())
+
+	buf := new(bytes.Buffer)
+
+	assert.Equal(t, int(3806393949), int(checksum.FromBuf(buf)))
+	assert.Equal(t, int(0), len(buf.Bytes()))
+}