Headless install of Raspbian (Jessie)

I needed to perform an install of Raspbian (Jessie) on a Raspberry PI, but I didn’t have a spare keyboard, mouse, or monitor / tv to connect it to. 
Download Raspbian from (current Jessie):
https://www.raspberrypi.org/downloads/
At the time of writing it was 4.1 (I used the lite version)
Download and install the SDCard Formatter from SDCard.org:
https://www.sdcard.org/downloads/formatter_4/eula_windows/
Download and install Win32 Disk Imager from sourceforge:
https://sourceforge.net/projects/win32diskimager/
 
Connect the SDCard, and run the SDFormatter application as an administrator.
This procedure will delete anything on the SDCard

Ensure the drive letter specified in the SDFormatter is the same as the drive letter of the SDCard connected (Open ‘Computer’ and check if need be)

Click the Option button and set FORMAT SIZE ADJUSTMENT to ON
Click OK.

click Format and Click OK

Click OK

Wait!

Once the format is finished, click OK and then click Exit.

  Run Win32 Disk Imager as Administrator

Select the correct Device, browse and select the Raspbian Jessie image downloaded, and click Write

Double check the drive letter, and click Yes to proceed

This will copy the Raspbian Jessie image to the SDCard, and may take some time.
Once the write is Successful, click OK, and Exit the Win32 Disk Imager



edit 22/03/17
Open the USB drive in file explorer and create a new blank file called ssh in the root.  (Make sure you don't have an extension on the file).  See note #3  https://www.raspberrypi.org/documentation/remote-access/ssh/

Connect the SDCard back into the Raspberry Pi, connect an eternet cable, and boot the device.
After some time, check your DHCP server or logs to identify the IP address of the device, alternatively query dns for raspberrypi.
Using putty, connect to the device using SSH.

Click Yes to the key warning

Login credentials are:
username: pi
password: raspberry

Run the initial Raspberry Pi Configuration by using the command:
sudo raspi-config

Modify the configuration as required.  Once completed, select Finish
If prompted to reboot, select No

Update the package source by running the commands
sudo sed -i 's/wheezy/jessie/g' /etc/apt/sources.list
sudo sed -i 's/wheezy/jessie/g' /etc/apt/sources.list.d/*
Update the package list using the command
sudo apt-get update
Update the distribution
sudo apt-get dist-upgrade
Select ‘Y’ to continue if prompted.
This may take some time.
Once completed, uninstall group-bin and configuration files
sudo apt-get purge cgroup-bin
It may / may not have anything to uninstall.  This can prevent the unit from booting.
Change the name of the device
sudo nano /etc/hostname
CTRL-X, Y and <Enter> to save the name
sudo nano /etc/hosts
Change the line
127.0.1.1     raspberrypi
to
127.0.1.1     <new name of the device>
CTRL-X, Y and <Enter> to save the name
 
Reboot the unit with
sudo reboot
 
Reference:
http://tech.tiefpunkt.com/2015/06/headless-raspberrypi-installation-with-raspbian-jessie/
https://www.raspberrypi.org/documentation/installation/installing-images/README.md
http://askubuntu.com/questions/231562/what-is-the-difference-between-apt-get-purge-and-apt-get-remove
http://packages.ubuntu.com/trusty/admin/cgroup-bin
http://www.raspians.com/Knowledgebase/how-to-change-hostname-on-raspberrypi/
https://www.raspberrypi.org/documentation/remote-access/ssh/