[BREAKING]
* Change default to "do not show the pages in the browser", change the option
--nofx to --fx to show the pages;
* Change default behavious for --save_stats from "ask the user" to "do not
save" the stats, --save_stats option still saves them.
Rename option from --fx to --browser
Merge pull request #10 from CristianCantoro/webbrowser-stats

Breaking changes to --nofx and --save_stats options