update readme

README.md

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-# cheatsheet-latex-template
+<p align="center">
+  <img alt="CheatSheet LaTeX Template" src="https://raw.githubusercontent.com/innovativeinnovation/cheatsheet-latex-template/master/docs/readme/readme-logo.png">
+</p>
+
+<p align="center">
+  CheatSheet LaTeX Template.
+</p>
+
+<p align="center">
+  <a href="https://raw.githubusercontent.com/innovativeinnovation/cheatsheet-latex-template/master/LICENSE">
+    <img alt="LaTeX Project Public License 1.3c" src="https://img.shields.io/badge/license-LPPL%201.3c-blue.svg">
+  </a>
+  <a href='https://github.com/innovativeinnovation/cheatsheet-latex-template/tags'>
+    <img alt="GitHub Tag" src="https://img.shields.io/github/tag/innovativeinnovation/cheatsheet-latex-template.svg" />
+  </a>
+</p>
+
+---
+
+Install
+-------
+
+Download the [latest release](https://github.com/innovativeinnovation/cheatsheet-latex-template/releases/latest)
+into the directory where you are preparing the cheatsheet.
+
+Usage
+-----
+
+```latex
+\documentclass[9pt]{innovativeinnovation-cheatsheet}
+\cheatsheettitle{Title}
+\begin{document}
+\cheatsheetsection{Section}
+...
+\cheatsheetfooter{Org}{Link}
+\end{document}
+```
+
+See [src/example.tex](src/example.tex)
+
+Screenshot
+----------
+
+![Screenshot](https://raw.githubusercontent.com/innovativeinnovation/cheatsheet-latex-template/master/docs/readme/screenshot.png)
+
+Contributing
+------------
+
+Contributions are always welcome.
+
+See [Contributing](CONTRIBUTING.md).
+
+Developer
+---------
+
+* [William Belle](https://github.com/williambelle)
+
+License
+-------
+
+The LaTeX Project Public License
+
+See the [LICENSE](LICENSE) file for more details.