message: chaning update prompt color to green for better visibility
diff: @@ -13,7 +13,7 @@ var pkg = require('../package.json');
  var makeMessage = function(update) {
  var line1 = ' Update available: ' + chalk.green.bold(update.latest) +
  chalk.dim(' (current: ' + update.current + ')') + ' ';
  - var line2 = ' Run ' + chalk.blue('npm install -g ' + update.name) +
  + var line2 = ' Run ' + chalk.green('npm install -g ' + update.name) +
  ' to update. ';
  var contentWidth = Math.max(stringLength(line1), stringLength(line2));
  var line1rest = contentWidth - stringLength(line1);
  