update Vagrantfile to use my habitrpg box and with performance improvements

Vagrantfile

@@ -5,11 +5,40 @@
 VAGRANTFILE_API_VERSION = "2"
 
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
-  config.vm.box = "thepeopleseason/habitrpg"
+  config.vm.box = "habitrpg"
   config.ssh.forward_agent = true
 
   config.vm.hostname = "habitrpg"
   config.vm.network "forwarded_port", guest: 3000, host: 3000, auto_correct: true
   config.vm.usable_port_range = (3000..3050)
   config.vm.provision :shell, :path => "vagrant.sh"
+
+  # http://www.stefanwrobel.com/how-to-make-vagrant-performance-not-suck
+  # also http://docs.vagrantup.com/v2/synced-folders/nfs.html
+  # Required for NFS to work, pick any local IP
+  config.vm.network :private_network, ip: '192.168.50.50'
+  # Use NFS for shared folders for better performance
+  config.vm.synced_folder '.', '/vagrant', nfs: true
+
+  # http://www.stefanwrobel.com/how-to-make-vagrant-performance-not-suck
+  # Use all CPU cores and 1/4 system memory
+  config.vm.provider "virtualbox" do |v|
+    host = RbConfig::CONFIG['host_os']
+    # Give VM 1/4 system memory & access to all cpu cores on the host
+    if host =~ /darwin/
+      cpus = `sysctl -n hw.ncpu`.to_i
+      # sysctl returns Bytes and we need to convert to MB
+      mem = `sysctl -n hw.memsize`.to_i / 1024 / 1024 / 4
+    elsif host =~ /linux/
+      cpus = `nproc`.to_i
+      # meminfo shows KB and we need to convert to MB
+      mem = `grep 'MemTotal' /proc/meminfo | sed -e 's/MemTotal://' -e 's/ kB//'`.to_i / 1024 / 4
+    else # sorry Windows folks, I can't help you
+      cpus = 2
+      mem = 1024
+    end
+    v.customize ["modifyvm", :id, "--memory", mem]
+    v.customize ["modifyvm", :id, "--cpus", cpus]
+  end
+
 end