TUN-528: Move cloudflared into a separate repo

vendor/github.com/equinox-io/equinox/internal/go-update/README.md

@@ -0,0 +1,65 @@
+# go-update: Build self-updating Go programs [![godoc reference](https://godoc.org/github.com/inconshreveable/go-update?status.png)](https://godoc.org/github.com/inconshreveable/go-update)
+
+Package update provides functionality to implement secure, self-updating Go programs (or other single-file targets)
+A program can update itself by replacing its executable file with a new version.
+
+It provides the flexibility to implement different updating user experiences
+like auto-updating, or manual user-initiated updates. It also boasts
+advanced features like binary patching and code signing verification.
+
+Example of updating from a URL:
+
+```go
+import (
+    "fmt"
+    "net/http"
+
+    "github.com/inconshreveable/go-update"
+)
+
+func doUpdate(url string) error {
+    resp, err := http.Get(url)
+    if err != nil {
+        return err
+    }
+    defer resp.Body.Close()
+    err := update.Apply(resp.Body, update.Options{})
+    if err != nil {
+        // error handling
+    }
+    return err
+}
+```
+
+## Features
+
+- Cross platform support (Windows too!)
+- Binary patch application
+- Checksum verification
+- Code signing verification
+- Support for updating arbitrary files
+
+## [equinox.io](https://equinox.io)
+[equinox.io](https://equinox.io) is a complete ready-to-go updating solution built on top of go-update that provides:
+
+- Hosted updates
+- Update channels (stable, beta, nightly, ...)
+- Dynamically computed binary diffs
+- Automatic key generation and code
+- Release tooling with proper code signing
+- Update/download metrics
+
+## API Compatibility Promises
+The master branch of `go-update` is *not* guaranteed to have a stable API over time. For any production application, you should vendor
+your dependency on `go-update` with a tool like git submodules, [gb](http://getgb.io/) or [govendor](https://github.com/kardianos/govendor).
+
+The `go-update` package makes the following promises about API compatibility:
+1. A list of all API-breaking changes will be documented in this README.
+1. `go-update` will strive for as few API-breaking changes as possible.
+
+## API Breaking Changes
+- **Sept 3, 2015**: The `Options` struct passed to `Apply` was changed to be passed by value instead of passed by pointer. Old API at `28de026`.
+- **Aug 9, 2015**: 2.0 API. Old API at `221d034` or `gopkg.in/inconshreveable/go-update.v0`.
+
+## License
+Apache