Update README: minor change on line 44

[piersbarrios]

WAS: $ vagrant desroy && vagrant up
SHOULD BE: $ vagrant destroy && vagrant up

[rhelmer]

Thanks - this project is pretty old, @piersbarrios are you using it? I am surprised it still works :)

I'd probably use Docker for this nowadays. The Ubuntu version here is pretty old if nothing else.

[piersbarrios]

I don't plan to use it but was just reading over to understand a few things. How vagrant could help and what was the syntax of a Vagrantfile for something I just did manually!
I just ran into the mistake and wanted to fix it if anybody else wants to use your work!

Cheers!