migrate to go modules from vndr

Signed-off-by: Tariq Ibrahim <tariq181290@gmail.com>

vendor/github.com/matttproud/golang_protobuf_extensions/README.md

@@ -1,20 +0,0 @@
-# Overview
-This repository provides various Protocol Buffer extensions for the Go
-language (golang), namely support for record length-delimited message
-streaming.
-
-| Java                           | Go                    |
-| ------------------------------ | --------------------- |
-| MessageLite#parseDelimitedFrom | pbutil.ReadDelimited  |
-| MessageLite#writeDelimitedTo   | pbutil.WriteDelimited |
-
-Because [Code Review 9102043](https://codereview.appspot.com/9102043/) is
-destined to never be merged into mainline (i.e., never be promoted to formal
-[goprotobuf features](https://github.com/golang/protobuf)), this repository
-will live here in the wild.
-
-# Documentation
-We have [generated Go Doc documentation](http://godoc.org/github.com/matttproud/golang_protobuf_extensions/pbutil) here.
-
-# Testing
-[![Build Status](https://travis-ci.org/matttproud/golang_protobuf_extensions.png?branch=master)](https://travis-ci.org/matttproud/golang_protobuf_extensions)

vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore

@@ -0,0 +1 @@
+cover.dat

vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile

@@ -0,0 +1,7 @@
+all:
+
+cover:
+	go test -cover -v -coverprofile=cover.dat ./...
+	go tool cover -func cover.dat
+
+.PHONY: cover