Update README.md

README.md

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 # Raspberry Lucid Proof-of-Concept
+
+This Proof-of-Concept show how it's possible to store raspberry's temperature data into a lucid node and fetch it into a chart.
+
+[Open the Demo →](https://lucid-kv.github.io/raspberry-poc/)
+
+![](https://user-images.githubusercontent.com/5221349/80119611-36d2ff00-858a-11ea-8f63-1cba7c15648a.png)
+
+# How to try it?
+
+If you want to try it on your own Lucid node, it's easily possible!
+
+## Create your own Lucid node
+
+Firstly you need to deploy your own node on heroku:
+
+<a href="https://heroku.com/deploy?template=https://github.com/lucid-kv/lucid" target="_blank">
+  <img src="https://www.herokucdn.com/deploy/button.svg" height="32"/>
+</a>
+
+## Fork this repo
+
+```bash
+git clone https://github.com/lucid-kv/raspberry-poc
+```
+
+# I don't have any Raspberry
+
+I can use the CPU temperature of any server or computer easily instead:
+
+```bash
+apt install lm_sensors
+sensors -A | grep 'Core 0' | cut -d : -f 2 | xargs | cut -c2-5 | curl -X PUT --data-binary "$(</dev/stdin)" https://lucid-kv.herokuapp.com/api/kv/rasp_poc_temp
+```