message: updated gulp script
diff: @@ -4,7 +4,7 @@ var gulp = require('gulp'),
  ignore = require('gulp-ignore'),
  uglify = require('gulp-uglify');
  -gulp.task('build', function () {
  +gulp.task('default', function(){
  gulp.src(['libs/*', 'dist/pptxgen.js'])
  .pipe(concat('pptxgen.bundle.js'))
  .pipe(sourcemaps.init())
  @@ -12,4 +12,9 @@ gulp.task('build', function () {
  .pipe(uglify())
  .pipe(sourcemaps.write('./'))
  .pipe(gulp.dest('dist/'));
  +
  + gulp.src(['dist/pptxgen.js'])
  + .pipe(concat('pptxgen.min.js'))
  + .pipe(uglify())
  + .pipe(gulp.dest('dist/'));
  });
  