Add initial docs hass.io

source/hassio/installation.markdown

@@ -9,4 +9,21 @@ sharing: true
 footer: true
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-[Placeholder]
+Hass.io images are available for all available Raspberry Pi platforms. Download the appropriate image for your Raspberry Pi:
+
+ - [Raspberry Pi / Zero][pi1]
+ - [Raspberry Pi 2][pi2]
+ - [Raspberry Pi 3][pi3]
+
+Once downloaded, write it to an SD card using [Etcher]. Then put the SD card into your Raspberry Pi and turn it on. You will be able to reach your installation on [http://hassio.local][local].
+
+### {% linkable_title Alternative: install on generic Linux server %}
+
+For advanced users, it is also possible to try Hass.io on your Linux server or inside a VM. To do so, [follow these instructions][linux].
+
+[Etcher]: https://etcher.io/
+[pi1]: https://github.com/home-assistant/hassio-build/releases/download/0.7/resinos-hassio-0.7-raspberrypi.img.bz2
+[pi2]: https://github.com/home-assistant/hassio-build/releases/download/0.7/resinos-hassio-0.7-raspberrypi2.img.bz2
+[pi3]: https://github.com/home-assistant/hassio-build/releases/download/0.7/resinos-hassio-0.7-raspberrypi3.img.bz2
+[linux]: https://github.com/home-assistant/hassio-build/tree/master/install
+[local]: http://hassio.local