What this configuration does:
This Vagrantfile provisions a x86 64-bit Ubuntu 14 instance with the following packages gdb, g++, valgrind, etc. Node.js including npm and express.
From apt-get: wget, curl, build-essential, emacs, vim, git, libgtest-dev, python, zip, gdb, default-jdk
Enabling npm:
In order to enable sudo npm, use sudo visudo, then add /usr/local/node/bin to the colin-delimited list of directories assigned to secure_path.
Happy developing!