UI for bi-directional file exchange spaces (a hackpad for file sharing)

[lidel]

Another take on "mutable sharing" (other being #52) is bi-directional exchange space in which all parties can add files (and organize them in directories!).

This could be useful collaboration tool, think http://hackmd.io/ but for file sharing.

Prior art:

• open exchange files example from js-ipfs repo in two tabs (PR, here is WebRTC version – may crash browser)

[lidel]

UI should be simple, for example a toggle on the page that usually shares static snapshot that says

• "allow others to add more files to this space"