old_contents: var gulp    = require('gulp');
  var uglify  = require('gulp-uglify');
  var umd     = require('gulp-wrap-umd');
  var rename  = require('gulp-rename');
  var bower   = require('bower-json');
  var browser = require('browser-sync').create();
  
  
  gulp.task( 'dist', function() {
    gulp.src('scrollreveal.js')
      .pipe( umd({ namespace: 'ScrollReveal', exports: 'ScrollReveal' }) )
      .pipe( gulp.dest('dist') )
  });
  
  gulp.task( 'dev', function() {
    gulp.src('scrollreveal.js')
      .pipe( gulp.dest('dev') );
  });
  
  gulp.task( 'validate', function() {
    bower.read('./bower.json', function( err, json ) {
      if ( err ) {
        console.error('There was an error reading the file');
        console.error( err.message );
        return;
      }
    });
  });
  
  gulp.task( 'dist:minify', function() {
    gulp.src('scrollreveal.js')
      .pipe( umd({ namespace: 'ScrollReveal', exports: 'ScrollReveal' }) )
      .pipe( uglify() )
      .pipe( rename('scrollreveal.min.js') )
      .pipe( gulp.dest('dist') )
  })
  
  gulp.task( 'default', function() {
    browser.init({ server: { baseDir: "./dev" } });
    gulp.start(['dev']);
    gulp.watch([ 'scrollreveal.js '], [ 'dev' ])
    gulp.watch([ 'dev/*.*' ]).on( "change", browser.reload );
  });
  
  gulp.task( 'build', [ 'validate','dist', 'dist:minify' ]);
  
new_contents: var gulp    = require('gulp');
  var uglify  = require('gulp-uglify');
  var umd     = require('gulp-wrap-umd');
  var rename  = require('gulp-rename');
  var bower   = require('bower-json');
  var browser = require('browser-sync').create();
  
  
  gulp.task( 'dist', function() {
    gulp.src('scrollreveal.js')
      .pipe( umd({ namespace: 'ScrollReveal', exports: 'this.ScrollReveal' }) )
      .pipe( gulp.dest('dist') )
  });
  
  gulp.task( 'dev', function() {
    gulp.src('scrollreveal.js')
      .pipe( gulp.dest('dev') );
  });
  
  gulp.task( 'validate', function() {
    bower.read('./bower.json', function( err, json ) {
      if ( err ) {
        console.error('There was an error reading the file');
        console.error( err.message );
        return;
      }
    });
  });
  
  gulp.task( 'dist:minify', function() {
    gulp.src('scrollreveal.js')
      .pipe( umd({ namespace: 'ScrollReveal', exports: 'this.ScrollReveal' }) )
      .pipe( uglify() )
      .pipe( rename('scrollreveal.min.js') )
      .pipe( gulp.dest('dist') )
  })
  
  gulp.task( 'default', function() {
    browser.init({ server: { baseDir: "./dev" } });
    gulp.start(['dev']);
    gulp.watch([ 'scrollreveal.js '], [ 'dev' ])
    gulp.watch([ 'dev/*.*' ]).on( "change", browser.reload );
  });
  
  gulp.task( 'build', [ 'validate','dist', 'dist:minify' ]);
  
subject: update UMD configuration [resolves #209]