Streams

  POST    /streams      { name: 'default' }
  PUT     /streams/:id  { name: 'new-default' }
  DELETE  /streams/:id
  GET     /streams

Feeds

  POST     /streams/:id/feeds    [{ id: 1, score: 1 }, { id: 2, score: 2 }]
  DELETE   /streams/:id/feeds    [{ id: 1 }, { id: 2 }]

Follow/Unfollow

  POST      /streams/:id/follow     [{ id: 'stream-1' }, { id: 'stream-2' }]
  DELETE    /streams/:id/unfollow   [{ id: 'stream-1' }, { id: 'stream-2' }]

On follow we should merge streams and post it as one stream. On unfollow we should unmerge streams and post it as one reduced stream.

Authentication could be done by adding authentication_token.