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/gorilla/context/README.md

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+context
+=======
+[![Build Status](https://travis-ci.org/gorilla/context.png?branch=master)](https://travis-ci.org/gorilla/context)
+
+gorilla/context is a general purpose registry for global request variables.
+
+Read the full documentation here: http://www.gorillatoolkit.org/pkg/context

vendor/github.com/gorilla/handlers/README.md

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+gorilla/handlers
+================
+[![GoDoc](https://godoc.org/github.com/gorilla/handlers?status.svg)](https://godoc.org/github.com/gorilla/handlers) [![Build Status](https://travis-ci.org/gorilla/handlers.svg?branch=master)](https://travis-ci.org/gorilla/handlers)
+
+Package handlers is a collection of handlers (aka "HTTP middleware") for use
+with Go's `net/http` package (or any framework supporting `http.Handler`), including:
+
+* `LoggingHandler` for logging HTTP requests in the Apache [Common Log
+  Format](http://httpd.apache.org/docs/2.2/logs.html#common).
+* `CombinedLoggingHandler` for logging HTTP requests in the Apache [Combined Log
+  Format](http://httpd.apache.org/docs/2.2/logs.html#combined) commonly used by
+  both Apache and nginx.
+* `CompressHandler` for gzipping responses.
+* `ContentTypeHandler` for validating requests against a list of accepted
+  content types.
+* `MethodHandler` for matching HTTP methods against handlers in a
+  `map[string]http.Handler`
+* `ProxyHeaders` for populating `r.RemoteAddr` and `r.URL.Scheme` based on the
+  `X-Forwarded-For`, `X-Real-IP`, `X-Forwarded-Proto` and RFC7239 `Forwarded`
+  headers when running a Go server behind a HTTP reverse proxy.
+* `CanonicalHost` for re-directing to the preferred host when handling multiple 
+  domains (i.e. multiple CNAME aliases).
+
+Other handlers are documented [on the Gorilla
+website](http://www.gorillatoolkit.org/pkg/handlers).
+
+## Example
+
+A simple example using `handlers.LoggingHandler` and `handlers.CompressHandler`:
+
+```go
+import (
+    "net/http"
+    "github.com/gorilla/handlers"
+)
+
+func main() {
+    r := http.NewServeMux()
+
+    // Only log requests to our admin dashboard to stdout
+    r.Handle("/admin", handlers.LoggingHandler(os.Stdout, http.HandlerFunc(ShowAdminDashboard)))
+    r.HandleFunc("/", ShowIndex)
+
+    // Wrap our server with our gzip handler to gzip compress all responses.
+    http.ListenAndServe(":8000", handlers.CompressHandler(r))
+}
+```
+
+## License
+
+BSD licensed. See the included LICENSE file for details.
+

vendor/github.com/gorilla/mux/README.md

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+mux
+===
+[![Build Status](https://travis-ci.org/gorilla/mux.png?branch=master)](https://travis-ci.org/gorilla/mux)
+
+gorilla/mux is a powerful URL router and dispatcher.
+
+Read the full documentation here: http://www.gorillatoolkit.org/pkg/mux