Auto merge of #1302 - rust-lang-nursery:fitzgen-patch-2, r=emilio
Auto merge of #1302 - rust-lang-nursery:fitzgen-patch-2, r=emilio

Match tag line on github in README to downplay implied reliability of binding to C++

r? @emilio

emilio/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen,emilio/rust-bindgen,rust-lang/rust-bindgen