From ffe6f9a949ef0105afd74f1fc48ef909f13449f2 Mon Sep 17 00:00:00 2001
From: Brian Tiger Chow <brian.holderchow@gmail.com>
Date: Thu, 15 Jan 2015 12:06:25 -0800
Subject: [PATCH] doc(core_io/Add)

@jbenet wasn't sure about the terminology here. I'm certain what I wrote
is not entirely correct. Feel free to edit.
---
 core/io/add.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/core/io/add.go b/core/io/add.go
index b12bc6380..50b8832fb 100644
--- a/core/io/add.go
+++ b/core/io/add.go
@@ -20,6 +20,8 @@ import (
 	u "github.com/jbenet/go-ipfs/util"
 )
 
+// Add builds a merkledag from the a reader, pinning all objects to the local
+// datastore. Returns a key representing the root node.
 func Add(n *core.IpfsNode, r io.Reader) (u.Key, error) {
 	// TODO more attractive function signature importer.BuildDagFromReader
 	dagNode, err := importer.BuildDagFromReader(