Move /data into private folder

Put /data at the same level as /node_modules,
because there's no need to have our raw data
out in the open like that.

Change-Id: I0272bfaaf5c4272193abfce213e13713cb6ed581
Readme: Add run step, under setup

Change-Id: I34b3a71aaa59903fd4f178072745cb037a9cffe9
UX: Make page title lowercase; adjust whitespace

Since we made 'notes' lowercase on the page text,
follow suit in the title.

Play with the whitespace near the note area.

Change-Id: I6a69a5bdef38b00774f3c64e49be400a509cdd32