Updated to 2.0.0

Please be aware that this change also removes the curl based user registration. This was more of a bugfixing thing but ended up removing behavior (not the intention). Also, having that breaks the scriptability of the `brew install tokumx-bin` command. 
I would want to recommend the repo owner to keep that in mind and probably come up with some other way of making people register - I just can't think of one at the moment.
I kinda expected that:
```
Error: Failure while executing: /usr/bin/curl -fLA Homebrew\ 0.9.5\ (Ruby\ 2.0.0-481;\ Mac\ OS\ X\ 10.10) -X POST --data-urlencode email=anonymous@homebrew-installer.com --data-urlencode source=homebrew --data-urlencode product=tokumx -o /dev/null -s http://www.tokutek.com/simple_create_account.php

$ /usr/bin/curl -f#LA Homebrew\ 0.9.5\ (Ruby\ 2.0.0-481;\ Mac\ OS\ X\ 10.10) -X POST --data-urlencode email=achauhan@brightcove.com --data-urlencode source=homebrew --data-urlencode product=tokumx
bash: syntax error near unexpected token `('
```