Documents stream_id search on VJ
Merge branch 'vj-archiving' of github.com:rhinobird/rhinobird-api into vj-archiving

* 'vj-archiving' of github.com:rhinobird/rhinobird-api:
  feat(pick) Adds show route to the picks resource
chore(git) Add .powder to gitignore
feat(timeline) Adds a resource to get a timeline of vjs and streams
feat(vjs) Return the user in the vj resource
Adds thumbnail to VJ
Fixs VJ thumbnail
Updates apiary docs
Adds spec for timeline
Merge pull request #72 from rhinobird/vj-archiving-timeline

Creates a timeline of streams and vjs
Fix thumbnail