Add v2

v2/example/Dockerfile

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+FROM ubuntu:14.04
+
+ADD ./sonyflake_server /
+ENTRYPOINT ["/sonyflake_server"]
+
+EXPOSE 8080

v2/example/Dockerrun.aws.json

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+{
+  "AWSEBDockerrunVersion": "1",
+  "Ports": [
+    {
+      "ContainerPort": "8080"
+    }
+  ]
+}

v2/example/README.md

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+Example
+=======
+
+This example runs Sonyflake on AWS Elastic Beanstalk.
+
+Setup
+-----
+
+1. Build the cross compiler for linux/amd64 if using other platforms.
+
+  ```
+  cd $GOROOT/src && GOOS=linux GOARCH=amd64 ./make.bash
+  ```
+
+2. Build sonyflake_server in the example directory.
+
+  ```
+  ./linux64_build.sh
+  ```
+
+3. Upload the example directory to AWS Elastic Beanstalk.

v2/example/linux64_build.sh

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+#!/bin/sh
+GOOS=linux GOARCH=amd64 go build sonyflake_server.go

v2/example/sonyflake_server.go

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+package main
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/sony/sonyflake/v2"
+	"github.com/sony/sonyflake/v2/awsutil"
+)
+
+var sf *sonyflake.Sonyflake
+
+func init() {
+	var st sonyflake.Settings
+	st.MachineID = awsutil.AmazonEC2MachineID
+	sf = sonyflake.NewSonyflake(st)
+	if sf == nil {
+		panic("sonyflake not created")
+	}
+}
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	id, err := sf.NextID()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	body, err := json.Marshal(sonyflake.Decompose(id))
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header()["Content-Type"] = []string{"application/json; charset=utf-8"}
+	w.Write(body)
+}
+
+func main() {
+	http.HandleFunc("/", handler)
+	http.ListenAndServe(":8080", nil)
+}