docs: add a npm header in the README.md (ipfs#1268)

In the Table of Contents, there is a link of npm. But it did't work, because npm wasn't a header. It's necessary to add a npm header to work a link of it well. Signed-off-by: Sangwon Hong <qpakzk@gmail.com>
JonKrone · Mar 17, 2018 · 4e786db · 4e786db
1 parent bddc5b4
commit 4e786db
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -80,6 +80,8 @@ You can check the development status at the [Waffle Board](https://waffle.io/ipf
 
 ## Install
 
+### npm
+
 This project is available through [npm](https://www.npmjs.com/). To install run
 
 ```bash