Task for using Grunticon with Gulp thanks to grunticon-lib.

gulpfile.js

var gulp      = require('gulp'),
    q         = require('q'),
    path      = require('path'),
    fs        = require('fs'),
    Grunticon = require('grunticon-lib');

gulp.task('icons', function () {
  var deferred = q.defer(),
      iconDir = 'app/images/icons/',
      options = { enhanceSVG: true };

  var files = fs.readdirSync(iconDir).map(function (fileName) {
    return path.join(iconDir, fileName);
  });

  var grunticon = new Grunticon(files, 'dist/icons', options);

  grunticon.process(function () {
    deferred.resolve();
  });

  return deferred.promise;
});

This slimmer version also works,
it uses gulp async task support
and glob.

var gulp      = require('gulp'),
    glob      = require('glob'),
    Grunticon = require('grunticon-lib');

gulp.task('icons', function (done) {
  var icons = 'app/images/icons/*.*',
      options = { enhanceSVG: true };

  var grunticon = new Grunticon(icons, 'dist/icons', options);

  grunticon.process(done);

});

@nsierram grunticon-lib needs the first parameter as an array of files not a glob pattern.

Amending your async code -

var gulp      = require('gulp'),
    glob      = require('glob'),
    Grunticon = require('grunticon-lib');

gulp.task('icons', function (done) {
  var icons = glob.sync('app/images/icons/*.*'), // <-- get array of files from glob pattern
      options = { enhanceSVG: true };

  var grunticon = new Grunticon(icons, 'dist/icons', options);

  grunticon.process(done);

});

Yup, u are right, I had forgotten to put that line ;)
glob.sync(src)..

Hi! Great code! Is it possibile integrate it with a .pipe so I can use gulp-svgmin before launch grunticon? Can I concatenate the grunticon.loader.js with other JS files and concatenate the .css files with other Css files?

Thanks!