some errors on mobile browsers

[TeeTeeHaa]

I do like your library, but it does not work correctly on the following platforms:

Firefox 16.0.2 on Android 4.0.4 on Motorola Xoom tablet => "version" detection causes exception

stock browser on Android 4.0.4 on Motorola Xoom tablet => "os" is not a string but an array containing one string

Chrome 25.0.1364.86 on iPad 1 tablet => "version" detection causes exception

I'm sorry that I cannot provide more information but I lack the tools and the time to debug code on those platforms.

[julkue]

It's hard to use this plugin with knowing that issues will not be fixed within 2 1/2 years :-1:

[julkue]

@benbscholz