book.json 缺少plugins

[CharlesSong]

全部的插件配置应该是：
"plugins": [
"image-captions",
"github-buttons",
"fontsettings",
"livereload",
"highlight",
"lunr",
"sharing",
"search"
]
`

[yeasy]

aha, do we really need those ones like fontsettings and livereload?

otherwise, too many plugins only slow down the compiling/loading, i guess.