Move IniParser class inside browscap-site

[asgrim]

browscap/browscap#1606 restores the missing IniParser class that is used by this site. It's only used here, so it makes much more sense to be over here. Port it over here for safe keeping :)

[mimmi20]

@asgrim You don't need to port the IniParser to the website. You could use the implementation from browscap-php.

[asgrim]

Thanks - good shout.