Updated the Vagrantfile to use the new config format

Vagrantfile

@@ -1,7 +1,6 @@
-Vagrant::Config.run do |config|
-  config.vm.box = "precise32"
-  config.vm.box_url = "http://files.vagrantup.com/precise32.box"
-  config.vm.forward_port 8089, 8089
-  config.vm.forward_port 9001, 9001
-  config.vm.provision :shell, :path => "examples/vagrant/vagrant.sh"
+Vagrant.configure("2") do |config|
+  config.vm.box = "precise32"
+  config.vm.box_url = "http://files.vagrantup.com/precise32.box"
+  config.vm.network :forwarded_port, guest: 8089, host: 8089
+  config.vm.provision :shell, :path => "examples/vagrant/vagrant.sh"
 end

examples/vagrant/vagrant.sh

@@ -6,7 +6,7 @@
 
 # Update and install some dependencies
 apt-get -y update 
-apt-get -y install build-essential python-pip python-dev libevent-dev libzmq-dev
+apt-get -y install build-essential python-pip python-dev libevent-dev libev-dev libzmq-dev
 cd /vagrant
 
 pip install --use-mirrors pyzmq supervisor