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+acme-tinier
+===========
+:compact-option:
+
+'acme-tinier' is a simplified rewrite of acme-tiny in Perl, since Python 3
+wanted to take 125 MiB on my machine while Perl is practically everywhere and
+the JSON::PP package seems to be present in most of its default installations.
+
+It is not likely to work with any other provider than Let's Encrypt, as the
+ACME protocol hasn't been finalised yet and there have been plenty of changes
+to it already.
+
+Usage
+-----
+The following is a minimal script to generate a key and a corresponding
+certificate using Let's Encrypt, assuming that a web server is properly set up
+to serve the `ACME_DIR` and the user running this, which should in no way be
+the root user, can place files in there:
+....
+#!/bin/sh -ex
+[ -f account.key ] || openssl genrsa 4096 > account.key
+[ -f intermediate.pem ] || curl -o intermediate.pem \
+	https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem
+
+DOMAIN=example.com
+
+[ -f $DOMAIN.key ] || openssl genrsa 4096 > $DOMAIN.key
+openssl req -new -sha256 -key $DOMAIN.key -nodes \
+	-subj "/CN=$DOMAIN/emailAddress=me@example.com" > $DOMAIN.csr
+
+ACME_DIR=/srv/http/acme-challenge \
+ACCOUNT_KEY=account.key \
+ACME_CA='https://acme-staging.api.letsencrypt.org' \
+./acme-tinier.pl $DOMAIN.csr > $DOMAIN.crt
+cat intermediate.pem >> $DOMAIN.crt
+....
+
+The Perl script itself is under 200 hundred lines of code, which is also the
+upper limit for development, and you are advised to study it before use.
+
+Contributing and Support
+------------------------
+Use this project's GitHub to report any bugs, request features, or submit pull
+requests.  If you want to discuss this project, or maybe just hang out with
+the developer, feel free to join me at irc://irc.janouch.name, channel #dev.
+
+Bitcoin donations: 12r5uEWEgcHC46xd64tt3hHt9EUvYYDHe9
+
+License
+-------
+'acme-tinier' is written by Přemysl Janouch <p.janouch@gmail.com>.
+
+You may use the software under the terms of the ISC license, the text of which
+is included within the package, or, at your option, you may relicense the work
+under the MIT or the Modified BSD License, as listed at the following site:
+
+http://www.gnu.org/licenses/license-list.html