archive.org integration

Right now, the popcorn-editor and archive/IA integration <=> goes like...

• Person makes a project with https://archive.org/pop/editor.html (popcorn-editor git repo latest production version master branch is rooted there where "pop" is linked into the top-level subdir "PopcornEditor")
• Person hits project save button (after making title and being IA logged in)
• Popcorn code POSTs JSON of project to IA, where the IA user account related cookies are seen
• IA side makes new item, dumps in JSON to it, looks for a referenced thumbnail in the project, grabs it, sticks it in item, does some other IA metadata setup (eg: setting subject keywords, collection should be in, etc.)
• /details/.... is available and plays the popcorn references in the "archive.org/pop" normal setup (eg: https://archive.org/details/Tracey_pooh-politicalAdscheckPlease )

TODO: So I figure I just add top few lines here: http://archive.org/~tracey/pope/exif-metadata.txt into the "project thumbnail found" step (above) by adding a quick/simple "inject project JSON into thumbnail"

INFO: (you can see the "found thumb" here, just to be concrete: https://archive.org/serve/Tracey_pooh-politicalAdscheckPlease (and the project JSON is in the _meta.xml file element))