Auto merge of #360 - alexwlchan:readme-link, r=BurntSushi
Auto merge of #360 - alexwlchan:readme-link, r=BurntSushi

Fix link to Regex type in README

rust-lang/regex,rust-lang/regex,rust-lang-nursery/regex,rust-lang-nursery/regex,rust-lang-nursery/regex,rust-lang-nursery/regex,rust-lang/regex,rust-lang/regex,rust-lang/regex,rust-lang-nursery/regex