Convert the chunked hello world example to a release

examples/chunked_hello_world/Makefile

@@ -0,0 +1,14 @@
+PROJECT = chunked_hello_world
+
+DEPS = cowboy
+dep_cowboy = pkg://cowboy master
+
+.PHONY: release clean-release
+
+release: clean-release all
+	relx
+
+clean-release:
+	rm -rf _rel
+
+include ../../erlang.mk

examples/chunked_hello_world/README.md

@@ -1,24 +1,28 @@
-Cowboy Chunked Hello World
-==========================
+Chunked hello world example
+===========================
 
-To compile this example you need rebar in your PATH.
+To try this example, you need GNU `make`, `git` and
+[relx](https://github.com/erlware/relx) in your PATH.
 
-Type the following command:
-```
-$ rebar get-deps compile
+To build the example, run the following command:
+
+``` bash
+$ make
 ```
 
-You can then start the Erlang node with the following command:
-```
-./start.sh
+To start the release in the foreground:
+
+``` bash
+$ ./_rel/bin/chunked_hello_world_example console
 ```
 
-Then run the given command or point your browser to the indicated URL.
+Then point your browser at [http://localhost:8080](http://localhost:8080),
+or use `curl` to see the chunks arriving one at a time every second.
 
-Example
--------
+Example output
+--------------
 
-```bash
+``` bash
 $ time curl -i http://localhost:8080
 HTTP/1.1 200 OK
 transfer-encoding: chunked

examples/chunked_hello_world/rebar.config

@@ -1,4 +0,0 @@
-{deps, [
-	{cowboy, ".*",
-		{git, "git://github.com/extend/cowboy.git", "master"}}
-]}.

examples/chunked_hello_world/relx.config

@@ -0,0 +1,2 @@
+{release, {chunked_hello_world_example, "1"}, [chunked_hello_world]}.
+{extended_start_script, true}.

examples/chunked_hello_world/src/chunked_hello_world.erl

@@ -1,15 +0,0 @@
-%% Feel free to use, reuse and abuse the code in this file.
-
--module(chunked_hello_world).
-
-%% API.
--export([start/0]).
-
-%% API.
-
-start() ->
-	ok = application:start(crypto),
-	ok = application:start(cowlib),
-	ok = application:start(ranch),
-	ok = application:start(cowboy),
-	ok = application:start(chunked_hello_world).

examples/chunked_hello_world/start.sh

@@ -1,3 +0,0 @@
-#!/bin/sh
-erl -pa ebin deps/*/ebin -s chunked_hello_world \
-	-eval "io:format(\"Run: curl -i http://localhost:8080~n\")."