Auto merge of #250 - mrhota:readme_update, r=alexcrichton
Auto merge of #250 - mrhota:readme_update, r=alexcrichton

Remove iOS doc links from README

Fixes #243

rust-lang/libc,superriva/libc,superriva/libc,mneumann/libc,rust-lang/libc,cactorium/libc,superriva/libc,cactorium/libc,anatol/libc,cactorium/libc,anatol/libc,anatol/libc,zethra/libc,mneumann/libc,philippkeller/libc,rust-lang-nursery/libc,rust-lang-nursery/libc,philippkeller/libc,philippkeller/libc,rust-lang/libc,rust-lang-nursery/libc,mneumann/libc,zethra/libc,zethra/libc