Fix README.md table of contents on GitHub.
Uses the gh-md-toc tool from
-[TOC]
+<!--ts-->
+ * [Introduction](#introduction)
+ * [What can it do?](#what-can-it-do)
+ * [How do I get set up?](#how-do-i-get-set-up)
+ * [Using one of our downloads](#using-one-of-our-downloads)
+ * [Compiling from source](#compiling-from-source)
+ * [SDL2](#sdl2)
+ * [Getting Started](#getting-started)
+
+<!-- Added by: Kyle, at: 2018-06-16T11:03-07:00 -->
+
+<!--te-->
## Introduction ##
