Updated demo app with appframework 2.0 for new XDK

Re-authored app with blank template. Single page, two panels. Same
functionality, with a slightly cleaner implementation using the new
Intel appframework; removed legacy aUX; updated screencap.
Cleanup on api.js

Replaced all tabs with spaces; removed foo (literally).
.xdk file typo fix

"blankProject", rather than a top secret "blackProject"
Merge pull request #1 from mansilladev/master

Updated demo app with appframework 2.0 for new XDK