let the VM use 1G of RAM and two cores by default

bundle install and some suites were starting to fail with less memory.

Author: fxn

Vagrantfile

@@ -7,4 +7,9 @@ Vagrant.configure('2') do |config|
   config.vm.network :forwarded_port, guest: 3000, host: 3000
 
   config.vm.provision :shell, path: 'bootstrap.sh', keep_color: true
+
+  config.vm.provider "virtualbox" do |v|
+    v.memory = 1024
+    v.cpus = 2
+  end
 end