Added simple gopherd cmd (server) and Dockerfile (image)

Dockerfile

@@ -0,0 +1,18 @@
+FROM golang:alpine
+
+EXPOSE 70/tcp
+
+ENTRYPOINT ["gopherd"]
+CMD []
+
+RUN \
+    apk add --update git && \
+    rm -rf /var/cache/apk/*
+
+RUN mkdir -p /go/src/github.com/prologic/gopherproxy
+WORKDIR /go/src/github.com/prologic/go-gopher
+
+COPY . /go/src/github.com/prologic/go-gopher
+
+RUN go get -v -d
+RUN go install -v github.com/prologic/go-gopher/...

README.md

@@ -9,7 +9,7 @@ server handling and examples of each.
 ## Installation
 
 ```#!bash
-$ go get github.com/prologic/go-gopher
+$ go get github.com/prologic/go-gopher/...
 ```
 
 ## Usage
@@ -18,6 +18,11 @@ $ go get github.com/prologic/go-gopher
 import "github.com/prologic/go-gopher"
 ```
 
+Or run the builtin (*very simple*) server:
+```#!bash
+$ gopherd
+```
+
 ## Example
 
 ### Client

cmd/gopherd/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/prologic/go-gopher"
+)
+
+func cwd() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		log.Fatal(err)
+	}
+	return dir
+}
+
+func main() {
+	var (
+		bind = flag.String("bind", ":70", "port to listen on")
+		root = flag.String("root", cwd(), "root directory to serve")
+	)
+
+	flag.Parse()
+
+	gopher.Handle("/", gopher.FileServer(gopher.Dir(*root)))
+
+	log.Fatal(gopher.ListenAndServe(*bind, nil))
+}