Replace godep with vndr

Vndr has a simpler configuration and allows pointing to forked
packages. Additionally other docker projects are now using
vndr making vendoring in distribution more consistent.

Updates letsencrypt to use fork.
No longer uses sub-vendored packages.

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

vendor/github.com/gorilla/context/.travis.yml

@@ -1,7 +0,0 @@
-language: go
-
-go:
-  - 1.0
-  - 1.1
-  - 1.2
-  - tip

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

@@ -1,7 +0,0 @@
-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/.travis.yml

@@ -1,8 +0,0 @@
-language: go
-
-go:
-  - 1.1
-  - 1.2
-  - 1.3
-  - 1.4
-  - tip

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

@@ -1,52 +0,0 @@
-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/.travis.yml

@@ -1,7 +0,0 @@
-language: go
-
-go:
-  - 1.0
-  - 1.1
-  - 1.2
-  - tip

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

@@ -1,7 +0,0 @@
-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