Update RPI user names (home-assistant#1117)

Carlo Costanzo · fabaff · commit 6876d7b76474 · 2016-10-04T22:02:02.000+02:00
Make a note for users to note the different user names used in the different installation types.
diff --git a/source/getting-started/installation-raspberry-pi.markdown b/source/getting-started/installation-raspberry-pi.markdown
@@ -13,8 +13,12 @@ footer: true
 
 There's currently three documented ways to install Home Assistant on a Raspberry Pi.  
  - [Manual installation](/getting-started/installation-raspberry-pi/#Manual-Installation). Following this guide doing each step manually. This is highly recommended as a first installation since you get a good overview of the installation.
- - [Hassbian image](/getting-started/installation-raspberry-pi-image). Basic installation with the same settings as following the manual installation guide. Some additional software is preinstalled to make installation quicker and easier.
- - [All-in-One Installer](/getting-started/installation-raspberry-pi-all-in-one/). Fabric based installation script that installs and compiles many of the things an advanced Home Assistant install is likely to need.
+ - [Hassbian image](/getting-started/installation-raspberry-pi-image). Basic installation with the same settings as following the manual installation guide. Some additional software is preinstalled to make installation quicker and easier. Installation uses `homeassistant` user.
+ - [All-in-One Installer](/getting-started/installation-raspberry-pi-all-in-one/). Fabric based installation script that installs and compiles many of the things an advanced Home Assistant install is likely to need. Installation uses `hass` user.
+ 
+ <p class='note note'>
+  Since each installation type uses a different user for Home Assistant, be sure to note and use the correct username for the `adduser` commands listed below for camera and GPIO extensions.
+</p>
 
 
 ### {% linkable_title Manual Installation %}
