Adding badges

Author: craftybones

README.md

@@ -1,4 +1,6 @@
 ![CircleCI](https://circleci.com/gh/step/assembly_simulator.svg?style=shield)
+[![npm version](https://badge.fury.io/js/%40craftybones%2Fassembly_simulator.svg)](https://badge.fury.io/js/%40craftybones%2Fassembly_simulator)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 # Assembly Simulator