docs: update README.md and doc-test

src/elements/keyword.rs

@@ -81,12 +81,12 @@ fn parse() {
     );
 
     assert_eq!(
-        Keyword::parse("#+ATTR_LATEX: :width 5cm"),
+        Keyword::parse("#+ATTR_LATEX: :width 5cm\n"),
         Some((
             "ATTR_LATEX",
             None,
             ":width 5cm",
-            "#+ATTR_LATEX: :width 5cm".len()
+            "#+ATTR_LATEX: :width 5cm\n".len()
         ))
     );
 

src/elements/mod.rs

@@ -1,3 +1,5 @@
+//! Org-mode elements module
+
 mod block;
 mod clock;
 mod cookie;
@@ -47,6 +49,12 @@ pub use self::{
 
 use indextree::NodeId;
 
+/// Org-mode element enum
+///
+/// Generally, each variant contains a element struct and
+/// a set of properties which indicate the position of the
+/// element in the original string.
+///
 #[derive(Debug)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize))]
 #[cfg_attr(feature = "serde", serde(tag = "type"))]