Update README.md

README.md

@@ -1,5 +1,6 @@
 # 3d-tiles-renderer
 
+[![npm version](https://img.shields.io/npm/v/3d-tiles-renderer.svg?style=flat-square)](https://www.npmjs.com/package/3d-tiles-renderer)
 [![travis build](https://img.shields.io/travis/com/NASA-AMMOS/3DTilesRendererJS/master.svg?style=flat-square)](https://travis-ci.com/NASA-AMMOS/3DTilesRendererJS)
 [![lgtm code quality](https://img.shields.io/lgtm/grade/javascript/g/NASA-AMMOS/3DTilesRendererJS.svg?style=flat-square&label=code-quality)](https://lgtm.com/projects/g/NASA-AMMOS/3DTilesRendererJS/)
 
@@ -15,6 +16,12 @@ Three.js renderer implementation for the [3D Tiles format](https://github.com/An
 
 # Use
 
+## Installation
+
+```
+npm install 3d-tiles-renderer --save
+```
+
 ## Basic TilesRenderer
 
 Setting up a basic application a 3D Tileset.