Clean up example

README.md

@@ -3,3 +3,24 @@
 High-level programming language with effortless concurrency, automatic memory management, type
 safety and advanced error handling.
 
+```dust
+io.write_line("Guess the number.")
+
+secret_number = random.range(0..100)
+
+loop {
+  	io.write_line("Input your guess.")
+
+  	input = io.read_line()
+  	guess = int.parse(input)
+
+  	if guess < secret_number {
+  	  	io.write_line("Too low!")
+	  } else if guess > secret_number {
+	    	io.write_line("Too high!")
+	  } else {
+	    	io.write_line("You win!")
+	    	break
+	  }
+}
+```

examples/guessing_game.ds

@@ -5,8 +5,8 @@ secret_number = int.random_range(0..100)
 loop {
 	io.write_line("Input your guess.")
 
-	input = io.read_line() ? io.write_line("Failed to read input.")
-	guess = int.parse(input) ? io.write_line("Failed to parse input.")
+	input = io.read_line()
+	guess = int.parse(input)
 
 	if guess < secret_number {
 		io.write_line("Too low!")