docs: Update the crate's docs

Author: Stranger6667

src/lib.rs

@@ -48,16 +48,7 @@
 //! }
 //! ```
 //!
-//! ### Features
-//!
-//! `css-inline` does minimum work by default:
-//!
-//! - No CSS transformation;
-//! - No "style" or "link" tags removal;
-//!
-//! It also loads external stylesheets via network or filesystem, but this behavior is configurable.
-//!
-//! ### Configuration
+//! ### Features & Configuration
 //!
 //! `css-inline` can be configured by using `InlineOptions` and `CSSInliner`:
 //!
@@ -84,9 +75,11 @@
 //! }
 //! ```
 //!
-//! - `remove_style_tags`. Remove "style" tags after inlining.
-//! - `base_url`. Base URL to resolve relative URLs
-//! - `load_remote_stylesheets`. Whether remote stylesheets should be loaded or not
+//! - `inline_style_tags`. Whether to inline CSS from "style" tags. Default: `true`
+//! - `remove_style_tags`. Remove "style" tags after inlining. Default: `false`
+//! - `base_url`. Base URL to resolve relative URLs. Default: `None`
+//! - `load_remote_stylesheets`. Whether remote stylesheets should be loaded or not. Default: `true`
+//! - `extra_css`. Additional CSS to inline. Default: `None`
 //!
 #![warn(
     clippy::doc_markdown,