microblog: Problem installing guess-language-spirit

Hi @miguelgrinberg,

First, I would like to say thanks to you for your work. I’m reading and typing your project.

Now, I’m on chapter 14, and I can’t install guess_language-spirit (with pipenv or pip)

(flask_mega_tutorial-x-oOu59U) ➜  flask_mega_tutorial git:(master) pipenv install guess_language-spirit
Installing guess_language-spirit…
Collecting guess_language-spirit

Error:  An error occurred while installing guess_language-spirit!
  Could not find a version that satisfies the requirement guess_language-spirit (from versions: )
No matching distribution found for guess_language-spirit

(flask_mega_tutorial-x-oOu59U) ➜  flask_mega_tutorial git:(master) pip install guess_language-spirit
Collecting guess_language-spirit
  Could not find a version that satisfies the requirement guess_language-spirit (from versions: )
No matching distribution found for guess_language-spirit

My python version is 3.6.4. My solution has been downloading the package (tar.gz) and installs it manually.

Have you any idea?