Not working link to documentation

[racinmat]

https://github.com/Kdyby/PayPalExpress/blob/master/docs/en/index.md
This link does not work, I would really appreciate if you provided documentation,
I would like to use this library and I really miss documentation.

[fprochazka]

I'm not sure I wanna write doc for this one http://filip-prochazka.com/blog/the-state-of-kdyby-2014