Fix the error type of fadeOutClass property

Author: ymhuang0808

README.md

@@ -85,7 +85,7 @@ You can make use of the following properties in order to customize your typing e
 | backDelay | Number | time before backspacing in milliseconds | `:backDelay="100"` |
 | fadeOut | Boolean | Fade out instead of backspace | `:fadeOut="true"` |
 | fadeOutClass | String | css class for fade animation | `:fadeOutClass="'fadeOutClass'"` |
-| fadeOutDelay | Boolean | fade out delay in milliseconds | `:fadeOutDelay="true"` |
+| fadeOutDelay | Number | fade out delay in milliseconds | `:fadeOutDelay="500"` |
 | loop | Boolean | loop strings | `:loop="true"` |
 | loopCount | Number | amount of loops | `:loopCount="3"` |
 | showCursor | Boolean | show cursor | `:showCursor="true"` |