Fixed bug with determining OS version.

Hi there,

I noticed a small bug (more like a typo, actually) that leads to failure to determine OS version, for example, in this iPhone's UA string "Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B145 Safari/8536.25" it shows OS name just like "iOS" instead of "iOS 6".

It was almost fixed in the commit https://github.com/keekun/UASparser-for-Python/commit/43e14d7fd445e35e2a63b28e223dac637edb0f60, I guess beaufour just forgot to add ['order'] on line 184.

Can you please merge the pull request?

Thanks!

-Roman