Compile tex files into PDFs with sharelatex.com

https://www.sharelatex.com/github/

> **How does this work?**
> We run a LaTeX compiler in the cloud which listens for changes to your Github repository. When you make a change, we compile the latest content and host the PDF and log files for you.
> 
> You can embed a badge into your project's README or website so that you can see the latest compile status and access the PDF with a single click.
