Add a section about case insensitivity

pod/perlfunc.pod

@@ -3390,6 +3390,13 @@ use C<glob> instead as it is more readable and searchable.
 
     my @txt_files  = <"*.txt">;
 
+If you need case insensitive file globbing that can be achieved using the
+C<:nocase> parameter of the L<File:::Glob> module.
+
+    use File::Glob qw(:globally :nocase);
+
+	my @txt = glob("readme*"); # README readme.txt Readme.md
+
 Note that L<C<glob>|/glob EXPR> splits its arguments on whitespace and
 treats
 each segment as separate pattern.  As such, C<glob("*.c *.h")>