Move build task to gulp

Gruntfile.js

@@ -248,11 +248,6 @@ module.exports = function(grunt) {
     );
   });
 
-  if(process.env.NODE_ENV == 'production')
-    grunt.registerTask('default', ['build:prod']);
-  else
-    grunt.registerTask('default', ['build:dev']);
-
   // Load tasks
   grunt.loadNpmTasks('grunt-browserify');
   grunt.loadNpmTasks('grunt-contrib-uglify');

package.json

@@ -80,7 +80,7 @@
   "scripts": {
     "test": "./node_modules/.bin/gulp test",
     "start": "grunt run:dev",
-    "postinstall": "./node_modules/bower/bin/bower --config.interactive=false install -f; ./node_modules/.bin/grunt;",
+    "postinstall": "./node_modules/bower/bin/bower --config.interactive=false install -f; ./node_modules/.bin/gulp build;",
     "coverage": "COVERAGE=true mocha --require register-handlers.js --reporter html-cov > coverage.html; open coverage.html"
   },
   "devDependencies": {
@@ -93,6 +93,7 @@
     "expect.js": "~0.2.0",
     "glob": "^4.3.5",
     "grunt-contrib-imagemin": "^0.9.4",
+    "gulp-grunt": "^0.5.2",
     "istanbul": "^0.3.14",
     "karma": "~0.10.2",
     "karma-chai-plugins": "~0.1.0",

tasks/gulp-build.js

@@ -0,0 +1,18 @@
+import gulp from 'gulp';
+require('gulp-grunt')(gulp);
+
+gulp.task('build', () => {
+  if (process.env.NODE_ENV === 'production') {
+    gulp.start('build:prod');
+  } else {
+    gulp.start('build:dev');
+  }
+});
+
+gulp.task('build:dev', (done) => {
+  gulp.start('grunt-build:dev', done);
+});
+
+gulp.task('build:prod', (done) => {
+  gulp.start('grunt-build:prod', done);
+});