Update vendor directory to match expectation of vndr tool

Adds READMEs and enforces vendor is done at repository root

Signed-off-by: Derek McGowan <derek@mcgstyle.net>

vendor/github.com/bshuster-repo/logrus-logstash-hook/README.md

@@ -0,0 +1,95 @@
+# Logstash hook for logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:" /> [![Build Status](https://travis-ci.org/bshuster-repo/logrus-logstash-hook.svg?branch=master)](https://travis-ci.org/bshuster-repo/logrus-logstash-hook)
+Use this hook to send the logs to [Logstash](https://www.elastic.co/products/logstash) over both UDP and TCP.
+
+## Usage
+
+```go
+package main
+
+import (
+        "github.com/Sirupsen/logrus"
+        "github.com/bshuster-repo/logrus-logstash-hook"
+)
+
+func main() {
+        log := logrus.New()
+        hook, err := logrus_logstash.NewHook("tcp", "172.17.0.2:9999", "myappName")
+
+        if err != nil {
+                log.Fatal(err)
+        }
+        log.Hooks.Add(hook)
+        ctx := log.WithFields(logrus.Fields{
+          "method": "main",
+        })
+        ...
+        ctx.Info("Hello World!")
+}
+```
+
+This is how it will look like:
+
+```ruby
+{
+    "@timestamp" => "2016-02-29T16:57:23.000Z",
+      "@version" => "1",
+         "level" => "info",
+       "message" => "Hello World!",
+        "method" => "main",
+          "host" => "172.17.0.1",
+          "port" => 45199,
+          "type" => "myappName"
+}
+```
+## Hook Fields
+Fields can be added to the hook, which will always be in the log context.
+This can be done when creating the hook:
+
+```go
+
+hook, err := logrus_logstash.NewHookWithFields("tcp", "172.17.0.2:9999", "myappName", logrus.Fields{
+        "hostname":    os.Hostname(),
+        "serviceName": "myServiceName",
+})
+```
+
+Or afterwards:
+
+```go
+
+hook.WithFields(logrus.Fields{
+        "hostname":    os.Hostname(),
+        "serviceName": "myServiceName",
+})
+```
+This allows you to set up the hook so logging is available immediately, and add important fields as they become available.
+
+Single fields can be added/updated using 'WithField':
+
+```go
+
+hook.WithField("status", "running")
+```
+
+
+
+## Field prefix
+
+The hook allows you to send logging to logstash and also retain the default std output in text format.
+However to keep this console output readable some fields might need to be omitted from the default non-hooked log output.
+Each hook can be configured with a prefix used to identify fields which are only to be logged to the logstash connection.
+For example if you don't want to see the hostname and serviceName on each log line in the console output you can add a prefix:
+
+```go
+
+
+hook, err := logrus_logstash.NewHookWithFields("tcp", "172.17.0.2:9999", "myappName", logrus.Fields{
+        "_hostname":    os.Hostname(),
+        "_serviceName": "myServiceName",
+})
+...
+hook.WithPrefix("_")
+```
+
+There are also constructors available which allow you to specify the prefix from the start.
+The std-out will not have the '\_hostname' and '\_servicename' fields, and the logstash output will, but the prefix will be dropped from the name.