Also add to https://github.com/zsh-users/zsh-completions

👾 Description of the issue
After the effort to split openjdk-build into two, we find ourselves with some documentation that is out of date, jumbled or outright wrong in some places. This issue intends to amend these irregularities by tidying up the visual features of this repo. Some ideas:

• We have a lot of .md files at the root o

It's very common for people to create a venv or .venv folder, using virtualenv or python -m venv, alongside the requirements.txt file for Python

    'venv requirements.txt'       # virtualenv (python)
    '.venv requirements.txt'      # virtualenv (python)

Currently, if I run bake command when the Bakefile is empty, the error message seems very scary:

Traceback (most recent call last):
  File "/home/redowan/.local/share/virtualenvs/flask-template-wBuRwttx/bin/bake", line 8, in <module>
    sys.exit(entrypoint())
  File "/home/redowan/.local/share/virtualenvs/flask-template-wBuRwttx/lib/python3.7/site-packages/click/core.py", line 764,