Port the getting started tutorial to a Jupyter notebook.
Getting Started
===============
+.. image:: https://colab.research.google.com/assets/colab-badge.svg
+ :target: https://colab.research.google.com/github/facebookresearch/CompilerGym/blob/development/examples/getting-started.ipynb
+
CompilerGym is a toolkit for applying reinforcement learning to compiler
optimization tasks. This document provides a short walkthrough of the key
concepts, using the codesize reduction task of a production-grade compiler
