updatePackageJSON = function() {
      console.info('Updating package.json');
      return gulp.src(packageFile)
        .pipe(plumber())
        .pipe(jsonEditor(function(json) {
          if(version) {
            json.version = version;
          }
          return json;
        }))
        .pipe(gulp.dest(outputDirectory))
      ;
    }
/*', { base: 'src/' })
          .pipe(gulp.dest(outputDirectory))
        ;
        themes = gulp.src('src/themes/*