Added Andrew Gallant name in the README.

Author: fulmicoton

README.md

@@ -6,6 +6,8 @@ tantivy-fst
 
 # WARNING: This is not the crate you are looking for.
 
-This crate is a fork of the `fst` crate to better fit the need of tantivy. 
+This crate is a fork of the `fst` crate from Andrew Gallant (alias BurntSushi) to better fit the need of tantivy. 
 You are probably looking for the  [fst](https://github.com/BurntSushi/fst) crate
 
+
+Please do not depend on this crate directly.