Facebook share dialog & open graph meta tags
Added a download page and specified redirect URI.
Use href w/ separate download page redirect.
Update download page to show download link
Show login dialog before share dialog.
Copy markup and style from actual page.
Moved code from script into new class 'Skymachine'
Change Facebook share button

No longer shows the share count next to button.
Rename script.js => application.js
Organize files into directories
Tidy markup up a little
Revert "Change Facebook share button"

This reverts commit b16752eb8ce6ec8b68b1536abf7946e21d429db0.

Conflicts:
	index.html
Fix typos
Hook up share button to handler