Install jupyter-book along with cookiecutter

[yuvipanda]

The hooks seem to import jupyter-book, so the instructions as provided fail with the following error:

3 - no
Choose from 1, 2, 3 [1]: 1
Traceback (most recent call last):
  File "/var/folders/p4/gnx7h_mj73v92nj_v93475v80000gn/T/tmpe50bxgoh.py", line 5, in <module>
    import jupyter_book
ModuleNotFoundError: No module named 'jupyter_book'
ERROR: Stopping generation because post_gen_project hook script didn't exit successfully
Hook script failed (exit status: 1)

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[yuvipanda]

/cc @choldgraf maybe?

[welcome[bot]]

Congrats on your first merged pull request in this project! :tada:
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[TomasBeuzen]

Thanks @yuvipanda @choldgraf!! We just had our first baby last week so things are a bit hectic for me at the moment and I'm not on my computer much 🙃🙃🙃

[choldgraf]

@TomasBeuzen amazing! congratulations and welcome to the chaos :-D