message: chnage ipfs version
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  - <!--<script src="https://unpkg.com/ipfs@0.27.7/dist/index.js" ></script>-->
  + <!--<script src="https://wiki.swap.online/ipfs.js" ></script>-->
  + <script src="https://unpkg.com/ipfs@0.27.7/dist/index.js" ></script>
  <script src="https://wiki.swap.online/ipfs-pubsub-room.js" id="ipfsRoom"></script>
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