Change README header link to HTTP
Change README header link to HTTP

HTTPS is broken for gh-pages with custom domains

thanegill/rxswiftcommunity.github.io,RxSwiftCommunity/rxswiftcommunity.github.io,RxSwiftCommunity/rxswiftcommunity.github.io,thanegill/rxswiftcommunity.github.io,RxSwiftCommunity/rxswiftcommunity.github.io