DOC-026: Add getting started text for users.

Author: mvousden

docs/getting-started-user.rst

@@ -1,2 +1,26 @@
-Getting Started
-===============
+Getting Started: As a User
+==========================
+
+To start a :term:`Virtual Micromagnetics` environment, you will need the
+following software:
+
+ - VirtualBox >= 5.0 (https://www.virtualbox.org/wiki/downloads)
+
+ - Vagrant >= 1.7.4 (https://www.vagrantup.com/downloads)
+
+Then command the following in an empty directory::
+
+  vagrant init virtualmicromagnetics/full
+  vagrant up --provider virtualbox
+
+These commands will download the Full Virtual Micromagnetics environment from
+the Internet to your computer, and load the environment automatically. When
+complete, you should be greeted with this window:
+
+.. image:: images/user-window-1.png
+
+This is output from a :term:`virtual machine` running on your computer! Virtual
+machines produced in this way run Ubuntu GNU/Linux (https://www.ubuntu.com)
+with the XFCE window manager. From here, follow instructions in the welcome
+file on the desktop to run simulations with the pre-installed packages. Never
+worry about software dependencies again!