[lint] check copyright notices for Reason files too

Summary: Long overdue...

Reviewed By: akotulski

Differential Revision: D3981122

fbshipit-source-id: 562be34

infer/src/scripts/checkCopyright.ml

@@ -187,6 +187,8 @@ let com_style_of_lang = [
   (".mli", comment_style_ocaml);
   (".mly", comment_style_c);
   (".mll", comment_style_ocaml);
+  (".re", comment_style_c);
+  (".rei", comment_style_c);
   (".c", comment_style_c);
   (".h", comment_style_c);
   (".cpp", comment_style_c);