chore: Update README

Author: mmstick

README.md

@@ -1,3 +1,19 @@
 # Freedesktop Desktop Entry Specification
 
-This crate provides a library for efficiently fetching, parsing, and generating [Desktop Entry](https://specifications.freedesktop.org/desktop-entry-spec/latest/index.html) files.
+This crate provides a library for efficiently parsing [Desktop Entry](https://specifications.freedesktop.org/desktop-entry-spec/latest/index.html) files.
+
+```rust
+use std::fs;
+
+use freedesktop_desktop_entry::{default_paths, DesktopEntry, Iter};
+
+fn main() {
+    for (path_src, path) in Iter::new(default_paths()) {
+        if let Ok(bytes) = fs::read_to_string(&path) {
+            if let Ok(entry) = DesktopEntry::decode(&path, &bytes) {
+                println!("{:?}: {}\n---\n{}", path_src, path.display(), entry);
+            }
+        }
+    }
+}
+```