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Add License and README file 


Signed-off-by: default avatarFrédéric Danis <frederic.danis@collabora.com>
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That's all there is to it!
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Apertis hawkBit Agent
=====================
The apertis-hawkbit-agent is a component in the OSTree-based images to poll
hawkBit update server, and in case of an update is available to download it
and trigger apertis-update-manager to apply it.
The daemon
==========
The daemon is started and stopped using systemd.
The typical boot sequence is similar to the log below:
```
$ systemctl status apertis-hawkbit-agent
● apertis-hawkbit-agent.service - Apertis hawkBit agent
Loaded: loaded (/lib/systemd/system/apertis-hawkbit-agent.service; enabled; vendor preset: enabled)
Active: active (running) since Wed 2019-10-09 06:27:19 UTC; 30min ago
Main PID: 372 (apertis-hawkbit)
Tasks: 5 (limit: 2311)
Memory: 8.5M
CGroup: /system.slice/apertis-hawkbit-agent.service
└─372 /usr/lib/apertis-hawkbit-agent/apertis-hawkbit-agent
Oct 09 06:27:19 apertis systemd[1]: Started Apertis hawkBit agent.
Oct 09 06:57:18 apertis apertis-hawkbit[372]: Retrieving base update info
Oct 09 06:57:19 apertis apertis-hawkbit[372]: Changing poll timeout to 30 seconds
Oct 09 06:57:49 apertis apertis-hawkbit[372]: Retrieving base update info
```
It is run at boot from a dedicated service file requested by `multi-user.target`.
Getting logs
============
```
$ journalctl --unit apertis-hawkbit-agent
-- Logs begin at Thu 2019-02-14 10:11:58 UTC, end at Wed 2019-10-09 06:59:49 UTC. --
Oct 09 06:27:19 apertis systemd[1]: Started Apertis hawkBit agent.
Oct 09 06:57:18 apertis apertis-hawkbit[372]: Retrieving base update info
Oct 09 06:57:19 apertis apertis-hawkbit[372]: Changing poll timeout to 30 seconds
Oct 09 06:57:49 apertis apertis-hawkbit[372]: Retrieving base update info
```
src/main.c
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/* vim:set et sw=2 cin cino=t0,f0,(0,{s,>2s,n-s,^-s,e2s: */
/*
* Copyright © 2019 Collabora Ltd.
*
* SPDX-License-Identifier: LGPL-2.1+
*/
#include <stdio.h>
#include <gio/gio.h>
......
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