Updated README for v0.3a.

Signed-off-by: The Doctor <drwho@virtadpt.net>
The "Does it blend?" script can't assume which directory it's in when
it starts Firefox.  Fixed that.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Updated [success,failure].html to reference the icon in the bottom-left
corner as the start menu.

Signed-off-by: The Doctor <drwho@virtadpt.net>