Merge pull request atom#18506 from atom/sm/readme

Add screenshot to README

Author: simurai

README.md

@@ -1,11 +1,15 @@
-![Atom](https://cloud.githubusercontent.com/assets/72919/2874231/3af1db48-d3dd-11e3-98dc-6066f8bc766f.png)
+# Atom
 
 [![Build status](https://dev.azure.com/github/Atom/_apis/build/status/Atom%20Production%20Branches?branchName=master)](https://dev.azure.com/github/Atom/_build/latest?definitionId=32&branchName=master) [![Linux Build Status](https://travis-ci.org/atom/atom.svg?branch=master)](https://travis-ci.org/atom/atom) [![Windows Build Status](https://ci.appveyor.com/api/projects/status/1tkktwh654w07eim?svg=true)](https://ci.appveyor.com/project/Atom/atom)
 [![Dependency Status](https://david-dm.org/atom/atom.svg)](https://david-dm.org/atom/atom)
 [![Join the Atom Community on Slack](https://atom-slack.herokuapp.com/badge.svg)](https://atom-slack.herokuapp.com)
 
 Atom is a hackable text editor for the 21st century, built on [Electron](https://github.com/atom/electron), and based on everything we love about our favorite editors. We designed it to be deeply customizable, but still approachable using the default configuration.
 
+![Atom](https://user-images.githubusercontent.com/378023/49132477-f4b77680-f31f-11e8-8357-ac6491761c6c.png)
+
+![Atom Screenshot](https://user-images.githubusercontent.com/378023/49132478-f4b77680-f31f-11e8-9e10-e8454d8d9b7e.png)
+
 Visit [atom.io](https://atom.io) to learn more or visit the [Atom forum](https://discuss.atom.io).
 
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