Fix brew install instructions in our vagrant docs
These commands have changed.
## You will need
-* Vagrant
-* VirtualBox
+* HashiCorp Vagrant
+* Oracle VirtualBox
You can install these using Homebrew cask:
```
-brew cask install virtualbox
-brew cask install vagrant
+brew install --cask virtualbox
+brew install --cask vagrant
```
## Create your workspace
@@ -23,7 +23,7 @@ cd ~/a2-testing
Create `Vagrantfile` with the following contents:
-```
+```ruby
Vagrant.configure(2) do |config|
config.vm.provider "virtualbox" do |v|
v.memory = 2048
