refactor to ES Modules (WIP)

Author: jcubic

Makefile

@@ -116,4 +116,4 @@ coveralls:
 	$(NPM) run coverage
 
 lint:
-	$(ESLINT) src/lips.js
+	$(ESLINT) src/*.js

README.md

@@ -2,7 +2,7 @@
 
 [![npm](https://img.shields.io/badge/npm-1.0.0%E2%80%93beta.14-blue.svg)](https://www.npmjs.com/package/@jcubic/lips)
 ![1.0.0 Complete](https://img.shields.io/github/milestones/progress-percent/jcubic/lips/1?label=1.0.0%20Complete)
-[![travis](https://travis-ci.com/jcubic/lips.svg?branch=devel&8837d2bfdf049e9c524fa4207b757da3adefe674)](https://travis-ci.com/jcubic/lips)
+[![travis](https://travis-ci.com/jcubic/lips.svg?branch=devel&bb25142451a939a80b2e668528e7949497d8a8d1)](https://travis-ci.com/jcubic/lips)
 [![Coverage Status](https://coveralls.io/repos/github/jcubic/lips/badge.svg?branch=devel&c4718a7f131af9e8661ca26097f3db4b)](https://coveralls.io/github/jcubic/lips?branch=devel)
 [![Join Gitter Chat](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/jcubic/lips)
 [![GitHub license](https://img.shields.io/github/license/jcubic/lips.svg)](https://github.com/jcubic/lips/blob/master/LICENSE)