yo latex:chapter <folder> <name>

Hey LeoColomb,

Thanks for writing this generator and making it available on GitHub. I added a chapter subgenerator that makes chapters and adds them to main.tex. Let me know what you think!

Cheers,

- Percipient24
My initial template follow a standard repository structure, i.e. the concrete code is into the `src/` folder.
Then I still prefer we write `'src/' + arguments[0];`

Also be careful about space between operators.