README: Add setup instructions

 * perl >= 5.10

 * Cache::File (part of the Cache module)

 * Crypt::Eksblowfish

 * DBI

 * DBD::Pg

 * Email::Sender

 * Geo::Distance

 * Mojolicious

 * Mojolicious::Plugin::Authentication

 * Travel::Status::DE::IRIS

 * UUID::Tiny

Setup

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TODO

First, you need to set up a PostgreSQL database so that travelynx can store

user accounts and journeys. Version 9.6 or later with UTF-8 locale (e.g.

`en_US.UTF-8`) should work fine.  The following steps describe setup on a

Debian 9 system, though setup on other distribution should be similar.

* Write down a strong random password

* Create a postgres user for travelynx: `sudo -u postgres createuser -P travelynx`

  (enter password when prompted)

* Create the database: `sudo -u postgres createdb -O travelynx travelynx`

* Initialize the database: `TRAVELYNX_DB_HOST=... TRAVELYNX_DB_NAME=... `

  `TRAVELYNX_DB_USER=... TRAVELYNX_DB_PASSWORD=... perl index.pl setup`

Your server also needs to be able to send mail. Set up your MTA of choice and

make sure that the sendmail binary can be used for outgoing mails. Mail

reception on the server is not required.

Finally, configure the web service:

* Set up a travelynx service using the service supervisor of your choice

  (see `examples/travelynx.service` for a systemd unit file)

* Configure your web server to reverse-provy requests to the travelynx

  instance. See `examples/nginx-site` for an nginx config.

You can now start the travelynx service, navigate to the website and register

your first account.

Please open an issue on <https://github.com/derf/travelynx/issues> or send a

mail to derf+travelynx@finalrewind.org if there is anything missing or

ambiguous in this setup manual.

Usage

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