Updated README.

README.md

@@ -1,43 +1,35 @@
 ![OpenADMS](https://www.dabamos.de/github/openadms.png)
 
 OpenADMS is an open source automatic deformation monitoring system for
-geodetical and geotechnical measurements. The software is written in Python 3
+geodetical and geotechnical observations. The software is written in Python 3
 and should run on Python 3.5 upwards. So far, it has been tested with CPython on
-FreeBSD 10 (x86-64), NetBSD 7 (ARMv7), and Windows 7 (x86).  For more
-information, please see https://www.dabamos.de/.
+FreeBSD 10 (x86-64, ARMv7), NetBSD 7 (ARMv7), and Windows 7 (x86, x86-64). For
+more information, please see https://www.dabamos.de/.
 
-The current development version of OpenADMS is 0.4 (code name “Dar es Salaam”).
+The current development version of OpenADMS is 0.4 (code name “Dar es Salaam”).
 
 ## Installation
 To run OpenADMS, clone the branch and execute `openadms.py`:
 
 ```
 $ git clone https://github.com/dabamos/openadms.git
 $ cd openadms
+$ pip install -U -r requirements.txt
 $ python3 openadms.py --config ./config/myconfig.json --debug
 ```
 
-### Libraries
-Some additional modules have to be installed in order to use OpenADMS:
+Some additional modules are used by OpenADMS:
 
 * [coloredlogs](https://pypi.python.org/pypi/coloredlogs) (MIT Licence)
 * [paho-mqtt](https://pypi.python.org/pypi/paho-mqtt) (Eclipse Public Licence)
 * [pyserial](https://pypi.python.org/pypi/pyserial) (Python Software Foundation Licence)
 
-The installation can be done with `pip`:
 
-```
-$ pip install -U -r requirements.txt
-```
 ## Message Broker
-The MQTT protocol is used for the internal message exchange in OpenADMS. An MQTT
-message broker, like [Eclipse Mosquitto](https://mosquitto.org/), must be
-installed and running before starting OpenADMS. On Unix-like operating systems
-an installed Mosquitto MQTT message broker can be launched with:
-
-```
-# service mosquitto onestart
-```
+The MQTT protocol is used for the internal and external message exchange in
+OpenADMS. An MQTT message broker, like [Eclipse Mosquitto](https://mosquitto.org/)
+or [HBMQTT](https://github.com/beerfactory/hbmqtt), must be installed and
+running before starting OpenADMS.
 
 For testing only, the public sandbox broker of
 [Eclipse IoT](https://iot.eclipse.org/getting-started) can be used. The server
@@ -56,8 +48,8 @@ $ python3 openadms.py --config ./config/myconfig.json --debug
 ```
 
 ## Virtual Environment
-For the set-up of an independent Python environment the tool `pyvenv` can be
-used, which is part of Python 3:
+The Python tool `pyvenv` can be used to set-up a virtual environment for
+development:
 
 ```
 $ pyvenv-3.5 ~/virtual-environment