Update README.md

README.md

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-# Python 2 script to check cpu load, cpu temperature and free space,
-# on a Raspberry Pi computer and publish the data to a MQTT server.
-# RUN pip install paho-mqtt
-# RUN sudo apt-get install python-pip
+Python 2 script to check cpu load, cpu temperature and free space,
+on a Raspberry Pi computer and publish the data to a MQTT server.
+
+#Installation:
+
+Install these two modules needed for the script
+RUN pip install paho-mqtt
+RUN sudo apt-get install python-pip
+Rename config.py.example to config.py and populate the needed variables
+Test the script.
+Create a cron entry like this:
+*/2 * * * * /usr/bin/python /home/pi/scripts/cpu_mqtt.py