message: fix link and delete some points in README
diff: @@ -29,12 +29,7 @@ Add many assets to your wallet:
  ### 3. Secondary market (trading between users)
  -1. <a href="https://swaponline.github.io/#/usdt-btc">Demo (orderbook)</a>
  -2. Real client: <a href="https://sonm.com/swap-online/">https://sonm.com/swap-online/</a>
  -
  -### 4. Other demos
  -
  -<a href="https://swaponline.github.io/#/usdt-wallet">USDT stablecoin wallet (payment system)</a>
  +<a href="https://swaponline.github.io/#/exchange/usdt-to-btc">Demo (orderbook)</a>
  ## Easy to use in your project
  