exclude duplicate author

AUTHORS.md

@@ -60,7 +60,6 @@
 - William Blankenship <william.jblankenship@gmail.com>
 - James Halliday <mail@substack.net>
 - Bazyli Brzóska <bazyli.brzoska@gmail.com>
-- Yoann Ciabaud <y.ciabaud@free.fr>
 
 #### Generated by tools/authors.sh.
 

tools/authors.sh → bin/update-authors.sh

@@ -9,6 +9,7 @@ while (<>) {
   next if $seen{$_};
   next if /<support\@greenkeeper.io>/;
   next if /<badger\@gitter.im>/;
+  next if /<y.ciabaud\@free.fr>/;
   next if /<.*\@users.noreply.github.com>/;
   $seen{$_} = push @authors, "- ", $_;
 }