Fix example in README

Author: thejpster

README.md

@@ -21,7 +21,7 @@ extern crate pc_keyboard;
 use pc_keyboard::{Keyboard, layouts, ScancodeSet2, HandleControl};
 
 fn main() {
-	let mut kb = pc_keyboard::Keyboard::new(layouts::Us104Key, ScancodeSet2, HandleControl::MapLettersToUnicode);
+	let mut kb: Keyboard<layouts::Us104Key, ScancodeSet2> = Keyboard::new(HandleControl::MapLettersToUnicode);
 	match kb.add_byte(0x20) {
 		Ok(Some(event)) => {
 			println!("Event {:?}", event);
@@ -42,6 +42,10 @@ fn main() {
 
 This crate is guaranteed to compile on stable Rust 1.61 and up. It might compile with older versions but that may change in any new patch release.
 
+## Changelog
+
+There is a changelog in [CHANGELOG.md].
+
 ## License
 
 Licensed under either of