Better formatting

README.md

@@ -40,12 +40,12 @@ id = bc:listen_noun("<noun>", event_type, event_arg, function callback)
 which is used to register asynchroneous callbacks on noun changes.
 `event_type` is one of
 
-* onchange => whenever the value changes, `event_arg` is ignored
-* onrising => whenever the value gets bigger, `event_arg` is ignored
-* onfalling => whenever the value gets smaller, `event_arg` is ignored
-* onvalue => whenever the value equals `event_arg`
-* onabove => whenever the value is bigger than `event_arg`
-* onbelow => whenever the value smaller than `event_arg`
+* `onchange` => whenever the value changes, `event_arg` is ignored
+* `onrising` => whenever the value gets bigger, `event_arg` is ignored
+* `onfalling` => whenever the value gets smaller, `event_arg` is ignored
+* `onvalue` => whenever the value equals `event_arg`
+* `onabove` => whenever the value is bigger than `event_arg`
+* `onbelow` => whenever the value smaller than `event_arg`
 
 A listener can be removed using