Simplify pre-commit hook installation

[sstallion]

A command should be added to simplify installing scripts/pre-commit.sh to wikis managed by git.

[sstallion]

Fixed by @jfishe in #14.

[jfishe]

If you want to see the messages from the pre-commit hook, e.g:

vim|wiki: Generating links...done.
vim|wiki: Generating diary links...done.
vim|wiki: Rebuilding tag metadata...done.
vim|wiki: Generating tag links...done.
vim|wiki: Converting all wiki pages to HTML...done.

Add verbose: true in .pre-commit-config.yaml:

repos:
    - repo: https://github.com/sstallion/vimwiki-cli
    rev: v1.2.0
    hooks:
      - id: vimwiki-cli
        verbose: true

[sstallion]

@jfishe I wonder if this should be the default. Worst case, we could add a verbose option in pre-commit.sh if someone wants to silence those messages.

[jfishe]

@jfishe I wonder if this should be the default. Worst case, we could add a verbose option in pre-commit.sh if someone wants to silence those messages.

I'm ok either way; I have it turned on for now--I may tire of the verbosity later. Pre-commit tends to avoid opt-out defaults.

We could change the example in the README to make it more obvious.