title: Install just one package globally on Julia
body: <p>I have a fresh Julia instalation on a machine that I want to use as a number-crunching server for various persons on a lab. There seems to be this nice package called jupyterhub wich makes the Jupyter Notebook interface avaible to various clients simultaneusly. A web page which I am unable to find again began suggesting something like "first install IJulia globally, then install JupyterHub..."</p>
  
  <p>I cannot seem to find a nice way to install ONE package globally.</p>