Launchy doesn't work in IE11

[adamjohnson]

Steps to reproduce the issue

1. Open IE11 (Modern.ie can help here)
2. Visit the official Launchy Demo page

Results

Launchy throws two console errors in IE11 and doesn't work:

'Symbol' is undefined
Object doesn't support property or method 'from'

Expected results

It's supposed to create a button that you can click and open a modal (aka function as seen in modern browsers).

Environment

1. Windows 10
2. Internet Explorer 11
3. Launchy v0.9.2.

Hotfix

Polyfilling ES6 features via polyfill.io makes Launchy work in IE11. Include this before Launchy's JS:

<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>

This is far from ideal, but will work in a pinch.