This looks like some nice code examples, but it's worth pointing out that Spacy's website has really well-written documentation with plenty of code. For example, their page on generating word vectors:
Our motivation in making this is to build up the site as a destination where you can map a conceptual ML problem to copy-and-pasteable code that immediately works and is readable / learn-fromable.
For the two of us (Mike Sall and I) creating the site, it's basically something we've often wanted in our day-to-day machine learning and data science work.