[docs] Align GitBook theming to main Vue.js site

[pearofducks]

One of the strengths Vue highlights is that these extra plugins are maintained by the core team. With this change, the documentation feels a lot more like this is true. :)

Note the lack of chapter numbers is not my doing, that seems to possibly be a change from GitBook 2 to 3 - but I do think it's better without them.

edit// Also, I'd recommend bumping the GitBook version in book.json if possible to >3.0.0, I couldn't get the current version to run locally. Let me know if this an OK change and I can add it here.

[ktsn]

Looks good to me.
@yyx990803 What do you think?

[kazupon]

awesome. 💯
if this theme is provided as the gitbook plugin, we can use it into the other vue docs.
we should be made the gitbook theme plugin.

[yyx990803]

This is great! And +1 to what @kazupon said

[pearofducks]

Plugin made! This applies the css globally - except the language-selection screen (a limitation of GitBook).

I can make a PR for any other projects as well to update their book.json. Let me know if there's more than just vue-router. :)

[yyx990803]

@pearofducks thank you so much! Would appreciate PRs for vue-router and vue-loader as well :)