filters: add lowdown filter for readme

it's suitable only for converting markdown to html, but i don't need
more. lowdown is better than about-formatting.sh because it doesn't
require shell. as i run this server on openbsd, web server is chrooted
so every binary should be copied to chroot directory. since chroot is
considered a security measure to restrict shell access, copying shell
executable to chroot directory would be stupid.

1 files changed, 3 insertions, 0 deletions

diff --git a/filters/lowdown-formatting b/filters/lowdown-formatting
new file mode 100755
index 0000000..3691a84
--- /dev/null
+++ b/filters/lowdown-formatting
@@ -0,0 +1,3 @@
+#!/bin/perl
+
+exec 'lowdown'