Update README.md

Author: dbirks

README.md

@@ -15,9 +15,7 @@ and over? Oh wait, never? 😅
 
 Introducing: 🎺 <b>slack-emoji-typer</b> 🎺
 
-Now you can type letters on your keyboard to instantly add alphabet emoji
-reactions to any Slack message, with amazingly incredible real-time visual
-feedback and wonderfully remarkably intuitive controls.
+Now you can type letters on your keyboard to instantly add alphabet emojis to any Slack message. You can also use `Backspace` to remove emoji, and use `Shift + Tab` to cycle through white and orange letters. Such a time saver!
 
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