Explain use of GPG

Packages.md

@@ -1,12 +1,6 @@
 ## Raspbian/OSMC
 
-Packages are available for the Debian based distros Raspbian and OSMC.
+Packages are available for the Debian based distros Raspbian.
-
-Add this line to your `/etc/apt/sources.list` for Debian Wheezy based distributions
-
-```
-deb http://archive.itimmer.nl/raspbian/moonlight wheezy main
-```
 
 Add this line to your `/etc/apt/sources.list` for Debian Jessie based distributions
 
@@ -14,6 +8,13 @@ Add this line to your `/etc/apt/sources.list` for Debian Jessie based distributi
 deb http://archive.itimmer.nl/raspbian/moonlight jessie main
 ```
 
+Fetch and install the GPG key
+
+```
+wget http://archive.itimmer.nl/itimmer.gpg
+sudo apt-key add itimmer.gpg
+```
+
 Install the package using
 
 ```
@@ -21,8 +22,6 @@ apt-get update
 apt-get install moonlight-embedded
 ```
 
-TODO: Provide the GPG key signing these packages.
-
 ## ArchLinux
 
 Source package for ArchLinux is available in [AUR](https://aur.archlinux.org/packages/moonlight-embedded/)
@@ -31,7 +30,13 @@ Prebuilt binary packages for ArchLinux ARM (armv6h/armv7h) are available, add th
 ```
 [moonlight]
 Server = http://archive.itimmer.nl/archlinux/$repo/os/$arch
-SigLevel = Optional
+```
+
+Fetch and install the GPG key
+
+```
+wget http://archive.itimmer.nl/itimmer.gpg
+sudo pacman-key --add itimmer.gpg
 ```
 
 Install package using the following command