Use toc-me for managed Table of Contents

https://github.com/apps/toc-me

Author: jasonkarns

README.md

@@ -7,6 +7,8 @@ When `engines` is configured with a range this plugin chooses the greatest insta
 
 [![Build Status](https://travis-ci.org/nodenv/nodenv-package-json-engine.svg?branch=master)](https://travis-ci.org/nodenv/nodenv-package-json-engine)
 
+<!-- toc -->
+
 ## Installation
 
 ### Installing with Git