Remove some stdin warning

* Ubuntu by default prevent messages being written to root's console
* Disallow this annoying error

Vagrantfile

@@ -5,6 +5,12 @@ Vagrant.configure("2") do |config|
   config.vm.network :private_network, ip: "10.10.10.10"
   config.ssh.forward_agent = true
 
+  # http://foo-o-rama.com/vagrant--stdin-is-not-a-tty--fix.html
+  config.vm.provision "fix-no-tty", type: "shell" do |s|
+    s.privileged = false
+    s.inline = "sudo sed -i '/tty/!s/mesg n/tty -s \\&\\& mesg n/' /root/.profile"
+  end
+
   config.vm.provider :virtualbox do |vb|
     vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
     vb.customize ["modifyvm", :id, "--memory", 1024]