Fixed Syntax error for emojiCursor
Fixed Syntax error for emojiCursor

Hi, I was having trouble customizing the Emojis used in emojiCursor but realized that I think there is a typo in the read me. 

`new emojiCursor({color: ["🔥", "🐬", "🦆"]});` 
should be 
`new emojiCursor({emoji: ["🔥", "🐬", "🦆"]});`

This project is awesome ❤️  thanks for making it!
tholman/90s-cursor-effects