README: Update Depenencies and Usage

 * perl >= 5.10

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

 * DBI

 * DBD::SQLite

 * DBD::Pg

 * Geo::Distance

 * Mojolicious

 * Mojolicious::Plugin::Authentication

 * Travel::Status::DE::IRIS

Setup

## Checking in

You can check into a train up to 10 minutes before its scheduled departure and

up to 60 minutes after its actual departure (including delays). I recommend

up to 3 hours after its actual departure (including delays). I recommend

doing so when it arrives at the station or shortly after boarding.

First, you need to select the station you want to check in from.

Navigate to `travelynx.de` or use the travelynx text in the navigation

Navigate to `travelynx.de` or click/tap on the travelynx text in the navigation

bar. You will see a list of the five stations closest to your current location

(as reported by your browser). Select the station you're at.

If it is not in the list, you can also directly go do "travelynx.de/*station

name*", e.g. "travelynx.de/Essen Hbf" or "travelynx.de/EE". Both names and

DS100 codes are supported.

(as reported by your browser). Select the station you're at or enter its

name or DS100 code manually.

Now, as soon as you select a train, you will be checked in and travelynx

will switch to the journey / checkout view.

your destination or shortly after having left the train.

Once checked in, `travelynx.de` will show a list of all upcoming stops. Select

one to check out there. You can also check out at a specific station

by navigating to "travelynx.de/*station name*" and selecting "Hier auschecken".

one to check out there. You can also check out at a specific station by

navigating to "travelynx.de/s/*station name*" and selecting "Hier auschecken".

If you forgot to check out in time, or are departing the train at a station

which is not part of its documented route (and also not part of its documented