function loadDev(){ 
  var jq = document.createElement("script");
  jq.setAttribute("src","http://code.jquery.com/jquery-2.1.0.js")
  document.head.appendChild(jq);
  var us = document.createElement("script");
  us.setAttribute("src","http://underscorejs.org/underscore.js")
  document.head.appendChild(us);
  console.log("Loaded Jquery and Underscore")
}
loadDev()