Re-add vagrant instructions

Vagrant.md

@@ -0,0 +1,28 @@
+
+
+#### Setup Vagrant Development Server
+
+```
+$ sudo apt-get install vagrant virtualbox
+
+# or add media.ccc.vm to /etc/hosts instead
+$ vagrant plugin install vagrant-hostsupdater
+```
+
+Start VM and download live data
+
+```
+$ vagrant up
+$ vagrant ssh -c 'cd /vagrant && ./bin/update-data'
+```
+
+* http://media.ccc.vm:3000/ <- Frontend
+* http://media.ccc.vm:3000/admin/ <- Backend
+  Username: admin@example.org
+  Password: media123
+
+Running tests:
+```
+$ vagrant ssh
+$ rails test
+```

Vagrantfile

@@ -155,5 +155,7 @@ server {
 NGINX
     systemctl enable --now nginx
 
+    echo "cd /vagrant" >> .profile
+
   SHELL
 end