From 390d1afb77fe58c0f083b46ad114a37d1ad1d91d Mon Sep 17 00:00:00 2001
From: Tristan Sloughter <t@crashfast.com>
Date: Wed, 22 Apr 2015 22:01:13 -0500
Subject: update readme provider

---
 README.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 555cddf..bc2accd 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,8 @@ Example:
 -behaviour(rebar_provider).
 
 -export([init/1,
-         do/1]).
+         do/1,
+         format_error/1]).
 
 -define(PROVIDER, something).
 -define(DEPS, []).
@@ -98,6 +99,10 @@ init(State) ->
 do(State) ->
     %% Do something
     {ok, State}.
+
+-spec format_error(any()) -> iolist().
+format_error(Reason) ->
+    io_lib:format("~p", [Reason]).
 ```
 
 
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