From f0b0c8f0fe3808824722fc0c8fb4396a2cc7d38c Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Fri, 25 Mar 2016 01:09:57 +0000
Subject: [PATCH] Describe provider-engine in the README

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 4700c9a..aef4431 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,18 @@ Instance methods:
 * `deriveChild(index)` - derive a node based on a child index
 * `getWallet()` - return a `Wallet` instance as seen above
 
+## Provider Engine
+
+The Wallet can be easily plugged into [provider-engine](https://github.com/metamask/provider-engine) to provide signing:
+
+```js
+const WalletSubprovider = require('ethereumjs-wallet/provider-engine')
+
+<engine>.addProvider(new WalletSubprovider(<wallet instance>))
+```
+
+Note it only supports the basic wallet. With a HD Wallet, call `getWallet()` first.
+
 ### Remarks about `toV3`
 
 The `options` is an optional object hash, where all the serialization parameters can be fine tuned: