Fix function signature in README

README.md

@@ -55,7 +55,7 @@ emitter.off('foo', listener);
 hasListeners(emitter, 'foo'); // false
 ```
 
-#### pipe(source, target/*, emitMethodName*/) _(event-emitter/pipe)_
+#### pipe(source, target[, emitMethodName]) _(event-emitter/pipe)_
 
 Pipes all events from _source_ emitter onto _target_ emitter (all events from _source_ emitter will be emitted also on _target_ emitter, but not other way).  
 Returns _pipe_ object which exposes `pipe.close` function. Invoke it to close configured _pipe_.