* Add search with elasticlunr.js
This commit adds search functionality to mdBook, based on work done by @phaiax. The in-browser search code uses elasticlunr.js to execute the search, using an index generated at book build time by elasticlunr-rs.
* Add generator comment
Someone on Reddit was wondering how the rust book was generated and said they checked the source. Thought I'd put this here. Might be a good idea to have a little footer "made with mdBook", but this'll do for now.
* Remove search/editor file override behavior
* Use for loop for book iterator
* Improve HTML regex
* Fix search CORS in file URIs
* Use ammonia to sanitize HTML
* Filter html5ever log messages
- Replaced link parser with a Regex
- Implemented {{#include}} links
- Will display relatively nice error when cannot open {{#}} linked file
- Escaped links no longer render with escape char
- utils::fs::file_to_path no takes AsRef<Path>
- sorted export/mod in lib.rs
- removing need to explicitly use `Path::new` all over the place
- removed warnings from doctests (normally invisible unless `cargo test -- --nocapture`)
- no doctests are norun/ignore now
- updated docs both in book-example and in docs not to refer to nonexisting API's