Change from Mkdocs to slates

docs/Vagrantfile

@@ -0,0 +1,46 @@
+Vagrant.configure(2) do |config|
+  config.vm.box = "ubuntu/bionic64"
+  config.vm.network :forwarded_port, guest: 4567, host: 4567
+  config.vm.provider "virtualbox" do |vb|
+    vb.memory = "2048"
+  end
+
+  config.vm.provision "bootstrap",
+    type: "shell",
+    inline: <<-SHELL
+      # add nodejs v12 repository
+      curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
+
+      sudo apt-get update
+      sudo apt-get install -yq ruby ruby-dev
+      sudo apt-get install -yq pkg-config build-essential nodejs git libxml2-dev libxslt-dev
+      sudo apt-get autoremove -yq
+      gem install --no-ri --no-rdoc bundler
+    SHELL
+
+  # add the local user git config to the vm
+  config.vm.provision "file", source: "~/.gitconfig", destination: ".gitconfig"
+
+  config.vm.provision "install",
+    type: "shell",
+    privileged: false,
+    inline: <<-SHELL
+      echo "=============================================="
+      echo "Installing app dependencies"
+      cd /vagrant
+      bundle config build.nokogiri --use-system-libraries
+      bundle install
+    SHELL
+
+  config.vm.provision "run",
+    type: "shell",
+    privileged: false,
+    run: "always",
+    inline: <<-SHELL
+      echo "=============================================="
+      echo "Starting up middleman at http://localhost:4567"
+      echo "If it does not come up, check the ~/middleman.log file for any error messages"
+      cd /vagrant
+      bundle exec middleman server --watcher-force-polling --watcher-latency=1 &> ~/middleman.log &
+    SHELL
+end