Update go dependencies

vendor/github.com/gogo/protobuf/Readme.md

@@ -1,6 +1,7 @@
 # Protocol Buffers for Go with Gadgets
 
 [![Build Status](https://travis-ci.org/gogo/protobuf.svg?branch=master)](https://travis-ci.org/gogo/protobuf)
+[![GoDoc](https://godoc.org/github.com/gogo/protobuf?status.svg)](http://godoc.org/github.com/gogo/protobuf)
 
 gogoprotobuf is a fork of <a href="https://github.com/golang/protobuf">golang/protobuf</a> with extra code generation features.
 
@@ -46,6 +47,8 @@ These projects use gogoprotobuf:
   - <a href="https://sendgrid.com/">sendgrid</a>
   - <a href="https://github.com/zero-os/0-stor">zero-os/0-stor</a>
   - <a href="https://github.com/spacemeshos/go-spacemesh">go-spacemesh</a>
+  - <a href="https://github.com/weaveworks/cortex">cortex</a> - <a href="https://github.com/weaveworks/cortex/blob/fee02a59729d3771ef888f7bf0fd050e1197c56e/pkg/ingester/client/cortex.proto">sample proto file</a>
+  - <a href="http://skywalking.apache.org/">Apache SkyWalking APM</a> - Istio telemetry receiver based on Mixer bypass protocol
 
 Please let us know if you are using gogoprotobuf by posting on our <a href="https://groups.google.com/forum/#!topic/gogoprotobuf/Brw76BxmFpQ">GoogleGroup</a>.
 
@@ -59,6 +62,7 @@ Please let us know if you are using gogoprotobuf by posting on our <a href="http
   - <a href="https://fosdem.org/2018/schedule/event/gopherjs/">Creating GopherJS Apps with gRPC-Web - Johan Brandhorst</a>
   - <a href="https://jbrandhorst.com/post/gogoproto/">So you want to use GoGo Protobuf - Johan Brandhorst</a>
   - <a href="https://jbrandhorst.com/post/grpc-errors/">Advanced gRPC Error Usage - Johan Brandhorst</a>
+  - <a href="https://www.udemy.com/grpc-golang/?couponCode=GITHUB10">gRPC Golang Course on Udemy - Stephane Maarek</a>
 
 ## Getting Started
 
@@ -71,11 +75,11 @@ After that you can choose:
 
 ### Installation
 
-To install it, you must first have Go (at least version 1.6.3 or 1.9 if you are using gRPC) installed (see [http://golang.org/doc/install](http://golang.org/doc/install)). 
-Latest patch versions of 1.9 and 1.10 are continuously tested.
+To install it, you must first have Go (at least version 1.6.3 or 1.9 if you are using gRPC) installed (see [http://golang.org/doc/install](http://golang.org/doc/install)).
+Latest patch versions of 1.10 and 1.11 are continuously tested.
 
 Next, install the standard protocol buffer implementation from [https://github.com/google/protobuf](https://github.com/google/protobuf).
-Most versions from 2.3.1 should not give any problems, but 2.6.1, 3.0.2 and 3.5.1 are continuously tested.
+Most versions from 2.3.1 should not give any problems, but 2.6.1, 3.0.2 and 3.6.1 are continuously tested.
 
 ### Speed
 
@@ -148,4 +152,8 @@ Here is an example using gofast:
 See [https://github.com/gogo/grpc-example](https://github.com/gogo/grpc-example) for an example of using gRPC with gogoprotobuf and the wider grpc-ecosystem.
 
 
-  
+## License
+This software is licensed under the 3-Clause BSD License
+("BSD License 2.0", "Revised BSD License", "New BSD License", or "Modified BSD License").
+
+