README: add a Getting Started section.
App: implements the drag'n drop.
Merge branch 'feature/drag-n-drop'
Fix the drag'n drop when entering a fipe.
Update the footer urls.
Merge branch 'fix/drag-n-drop'
Rebar: fix repositories urls.

Closes #1
Replace the old cowboy_static by the builtin one.
Merge branch 'refacto/remove-cowboy-static-dependency'
App: when leaving the fipe, ask for a confirmation.

Only when the user share files.
Merge branch 'feature/confirmation'
App: fix multibyte filenames by updating tnetstrings.js
Merge branch 'bufix/multibyte-filenames'
Rebar: freeze the deps.
Set an X-Accel-Buffer header to "no" when downloading a file.

This header says to Nginx to not buffer our response.
Wait the server to ask for more streaming.

Now use a "ping/pong" streaming: send a chunk and wait the server to ask for
more to stream the following;
nginx config and git repo
drag and drop with visual feedback
Prefix pic of uploaded file is now an <img>

Because it will be useful to add callback on click
UX: display full file url