Boot2Docker experience is updated now that we have a Docker
client on Windows. Instead of running `boot2docker ssh`, users
can also use boot2docker on Windows Command Prompt (`cmd.exe`)
and PowerShell.
Updated documentation and screenshots, added a few details,
reorganized sections by importance, fixed a few errors.
Remaining: the video link in the Demonstration section needs
to be updated once I shoot a new video.
Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com>
