Add token "UNI"

[germartinez]

Token information

• Name: Uniswap
• Etherscan link: https://etherscan.io/token/0x1f9840a85d5af5bf1d1762f925bdaddc4201f984
• Website (to prevent scam tokens): https://uniswap.org/
• Image (at least 200x200, PNG if possible)
  https://pbs.twimg.com/profile_images/1242184851152928769/wG2eTAfD_400x400.jpg or https://research.binance.com/static/images/projects/uniswap/logo.png (transparent background)

[Uxio0]

Done