Fix broken links

Author: lgeiger

README.md

@@ -1,14 +1,14 @@
 # zeromq
 
 [![codecov](https://codecov.io/gh/zeromq/zeromq.js/branch/master/graph/badge.svg)](https://codecov.io/gh/zeromq/zeromq.js)
-[![](https://img.shields.io/badge/version-latest-blue.svg)](https://github.com/nteract/zmq-prebuilt)
+[![](https://img.shields.io/badge/version-latest-blue.svg)](https://github.com/zeromq/zeromq.js)
 [![Build Status](https://travis-ci.org/zeromq/zeromq.js.svg?branch=master)](https://travis-ci.org/zeromq/zeromq.js)
 [![Build status](https://ci.appveyor.com/api/projects/status/6u7saauir2msxpou?svg=true)](https://ci.appveyor.com/project/zeromq/zeromq.js)
-[![](https://img.shields.io/badge/version-stable-blue.svg)](https://github.com/nteract/zmq-prebuilt/releases/tag/v1.4.0)
+[![](https://img.shields.io/badge/version-stable-blue.svg)](https://github.com/zeromq/zeromq.js/releases)
 [![Build Status](https://travis-ci.org/nteract/zmq-prebuilt-testing.svg?branch=master)](https://travis-ci.org/nteract/zmq-prebuilt-testing)
 [![Build status](https://ci.appveyor.com/api/projects/status/ox85p208tsxw6vt1?svg=true)](https://ci.appveyor.com/project/nteract/zmq-prebuilt-testing)
 
-[**Users**](#installation---users) | [**From Source**](#installation---from-source) | [**Contributors and Development**](#installation---contributors-and-development) | [**Maintainers**](#for--maintainers-creating-a-release)
+[**Users**](#installation---users) | [**From Source**](#installation---from-source) | [**Contributors and Development**](#installation---contributors-and-development) | [**Maintainers**](#for-maintainers-creating-a-release)
 
 **zeromq**: Your ready to use, prebuilt [ØMQ](http://www.zeromq.org/)
 bindings for [Node.js](https://nodejs.org/en/).