[enhancement] Readme update

[MIchaelMainer]

On Windows, I can run build.sh to compile the book when I use Git Bash. There is also a minor typo too. I suggest you make the following changes:

Windows

1. Install the MiKTeX project.
2. Install Git Bash if you don't already have it.
3. Clone this repository.
4. Run ./build.sh from the root of this repository. MiKTeX will ask to install dependencies. Install them.

After reading a few lines in the book, I'm excited to read this. Looks like great info!