Change swiftype into algolia

[Xuanwo]

ref: https://hexo.io/zh-cn/docs/data-files.html#comment-2340181648

and this is an example: cdnjs
should we do this change?

@tommy351 @leesei

[tommy351]

Maybe we can give it a try.

[tommy351]

It seems Algolia doesn't provide site search and we have to upload the index manually.

[Xuanwo]

So it will be hard to maintain, especially for our site, how about read this: https://github.com/algolia/algoliasearch-jekyll , I remember someone said he want to develop a algolia plugin for hexo.

[leesei]

I think we can post db.json or the one generated by alexbruno/hexo-generator-json-content for indexing. But then we still have to implement/integrate the search widget for rendering the result.

Algolia's OSS widget:
https://community.algolia.com/instantsearch.js/documentation/#searchbox

[tommy351]

I'm trying https://community.algolia.com/docsearch/

[wzpan]

Why not use hexo-generator-search ?

[leesei]

Done, mostly in this commit a3961d9