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/mgetblocks.go

@@ -0,0 +1,24 @@
+package payload
+
+import (
+	"github.com/CityOfZion/neo-go/pkg/wire/command"
+	"github.com/CityOfZion/neo-go/pkg/wire/util"
+)
+
+// GetBlocksMessage represnts a GetBlocks message on the neo-network
+type GetBlocksMessage struct {
+	*GetHeadersMessage
+}
+
+// NewGetBlocksMessage returns a GetBlocksMessage object
+func NewGetBlocksMessage(start []util.Uint256, stop util.Uint256) (*GetBlocksMessage, error) {
+	GetHeaders, err := newAbstractGetHeaders(start, stop, command.GetBlocks)
+
+	if err != nil {
+		return nil, err
+	}
+	return &GetBlocksMessage{
+		GetHeaders,
+	}, nil
+
+}