Merge pull request rust-lang#18 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md

Author: TheDan64

README.md

@@ -4,6 +4,7 @@
 [![Build Status](https://travis-ci.org/TheDan64/inkwell.svg?branch=master)](https://travis-ci.org/TheDan64/inkwell)
 [![codecov](https://codecov.io/gh/TheDan64/inkwell/branch/master/graph/badge.svg)](https://codecov.io/gh/TheDan64/inkwell)
 [![lines of code](https://tokei.rs/b1/github/TheDan64/inkwell)](https://github.com/Aaronepower/tokei)
+[![Join the chat at https://gitter.im/inkwell-rs/Lobby](https://badges.gitter.im/inkwell-rs/Lobby.svg)](https://gitter.im/inkwell-rs/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 **I**t's a **N**ew **K**ind of **W**rapper for **E**xposing **LL**VM (*S*afely)