Change version scheme of Tor Browser
The current version scheme of tor browser is based on the tor version number.
I suggest we start at 1.0 and build upwards. New tor stables mean a jump to a new integer in the version scheme. When tor-0.2.3 is stable, we release Tor Browser 1.0. When tor-0.2.4 is stable, we release Tor Browser 2.0.