From 5c13469bf64b9f72d74895f31feeef8653647f70 Mon Sep 17 00:00:00 2001
From: Gareth Jones <gareth.jones@sensis.com.au>
Date: Sun, 15 Sep 2013 14:46:47 +1000
Subject: [PATCH] added section on peer dependencies

---
 writing-appenders.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/writing-appenders.md b/writing-appenders.md
index 7311f17..0268b34 100644
--- a/writing-appenders.md
+++ b/writing-appenders.md
@@ -62,3 +62,20 @@ Note that in addition to our couchdb appender config, the appenderMaker function
 The `layout` portion of the config can be passed directly to `layouts.layout(config.layout)` to generate a layout function.
 
 The appender function returned after processing your config should just take one argument: a log event. This function will be called for every log event that should be handled by your appender. In our case, with the config above, every log event of DEBUG level and above will be sent to our appender.
+
+Dependencies
+------------
+You should declare which version of log4js your appender works with by
+including a "peerDependencies" section in your package.json. e.g.
+
+    {
+        "name": "my-cool-appender",
+        "version": "0.0.1",
+        ...
+        "peerDependencies": {
+            "log4js": "0.7.x"
+        }
+    }
+    
+For more details on peer dependencies, see
+[this blog post](http://blog.nodejs.org/2013/02/07/peer-dependencies/).