improve docs

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sitewriter"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Edgar L. <contact@edgarluque.com>"]
 edition = "2018"
 description = "A sitemap writing library."

src/lib.rs

@@ -1,9 +1,61 @@
+//! ## A rust library to generate sitemaps.
+//! 
+//! It uses the [quick-xml](https://github.com/tafia/quick-xml) so it should be fast.
+//!
+//! To handle the [`Url::lastmod`] tag it uses [chrono](https://docs.rs/chrono/) but it can be disabled with `default-features = false`.
+//!
+//! ## Example
+//!
+//! ```rust
+//! use chrono::prelude::*;
+//! use sitewriter::*;
+//! 
+//! fn main() {
+//!     let mut sitemap = Sitemap::new();
+//!     sitemap.urls.push(Url::new("https://edgarluque.com/projects"));
+//! 
+//!     sitemap.urls.push(Url {
+//!         loc: "https://edgarluque.com/",
+//!         changefreq: Some(ChangeFreq::Daily),
+//!         priority: Some(1.0),
+//!         lastmod: Some(Utc::now()),
+//!     });
+//! 
+//!     sitemap.urls.push(Url {
+//!         loc: "https://edgarluque.com/blog",
+//!         changefreq: Some(ChangeFreq::Weekly),
+//!         priority: Some(0.8),
+//!         lastmod: Some(Utc::now()),
+//!     });
+//! 
+//!     sitemap.urls.push(Url {
+//!         loc: "https://edgarluque.com/blog/sitewriter",
+//!         changefreq: Some(ChangeFreq::Never),
+//!         priority: Some(0.5),
+//!         lastmod: Some(Utc.ymd(2020, 11, 22).and_hms(15, 10, 15)),
+//!     });
+//! 
+//!     sitemap.urls.push(Url {
+//!         loc: "https://edgarluque.com/blog/some-future-post",
+//!         changefreq: Some(ChangeFreq::Never),
+//!         priority: Some(0.5),
+//!         lastmod: Some(Utc.from_utc_datetime(&Local.ymd(2020, 12, 5).and_hms(12, 30, 0).naive_utc())),
+//!     });
+//! 
+//! 
+//!     let result = sitemap.into_str();
+//!     println!("{}", result);
+//! }
+//! ```
+
 #[cfg(feature = "chrono")]
 use chrono::{DateTime, Utc, SecondsFormat};
+
 use quick_xml::{
     events::{BytesDecl, BytesEnd, BytesStart, BytesText, Event},
     Writer,
 };
+
 use std::fmt::Display;
 use std::io::Cursor;
 use std::borrow::Cow;
@@ -98,7 +150,7 @@ impl<'a> Sitemap<'a> {
 
     /// Generates the sitemap using the provided writer.
     ///
-    /// It's recommended to use [`into_bytes`] or [`into_str`]
+    /// It's recommended to use [`Sitemap::into_bytes()`] or [`Sitemap::into_str()`]
     pub fn generate<T>(&self, inner_writer: T) -> T
     where
         T: std::io::Write,