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/**
 * Uncamelize a string, joining the words by separator character.
 * @param string Text to uncamelize
 * @param string Word separator
 * @return string Uncamelized text
 */
function uncamelize(text, separator) {
 
  // Assume separator is _ if no one has been provided.
  if(typeof(separator) == "undefined") {
    separator = "_";
  }
 
  // Replace all capital letters by separator followed by lowercase one
  var text = text.replace(/[A-Z]/g, function (letter) {
    return separator + letter.toLowerCase();
  });
 
  // Remove first separator (to avoid _hello_world name)
  return text.replace("/^" + separator + "/", '');
 
}