Convert the GET echo example to a release

examples/echo_get/README.md

@@ -1,23 +1,28 @@
-Cowboy GET Echo
-===============
+GET parameter echo 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/get_echo_example console
 ```
 
-Then point your browser to the indicated URL. You can change
-the GET parameter to check that the handler is echoing properly.
+Then point your browser at
+[http://localhost:8080/?echo=hello](http://localhost:8080/?echo=hello).
+You can replace the `echo` parameter with another to check
+that the handler is echoing it back properly.
 
-Example
--------
+Example output
+--------------
 
 ``` bash
 $ curl -i "http://localhost:8080/?echo=saymyname"
@@ -26,7 +31,7 @@ connection: keep-alive
 server: Cowboy
 date: Fri, 28 Sep 2012 04:09:04 GMT
 content-length: 9
-Content-Encoding: utf-8
+content-type: text/plain; charset=utf-8
 
 saymyname
 ```