Add a more involved REST example

A pastebin type application that can optionally highlight the output as
both text and HTML.

examples/rest_pastebin/src/rest_pastebin_app.erl

@@ -0,0 +1,25 @@
+%% Feel free to use, reuse and abuse the code in this file.
+
+%% @private
+-module(rest_pastebin_app).
+-behaviour(application).
+
+%% API.
+-export([start/2]).
+-export([stop/1]).
+
+%% API.
+
+start(_Type, _Args) ->
+	Dispatch = cowboy_router:compile([
+		{'_', [
+			{"/[:paste_id]", toppage_handler, []}
+		]}
+	]),
+	{ok, _} = cowboy:start_http(http, 100, [{port, 8080}], [
+		{env, [{dispatch, Dispatch}]}
+	]),
+	rest_pastebin_sup:start_link().
+
+stop(_State) ->
+	ok.