Updated grunt to new version

Gruntfile.js

@@ -0,0 +1,61 @@
+module.exports = function(grunt) {
+  var files = ['<banner:meta.banner>', 
+              'source/jarallax.js',
+              'source/jarallax_tools.js',
+              'source/jarallax_controller.js',
+              'source/jarallax_counter.js',
+              'source/jarallax_object.js',
+              'source/jarallax_animation.js',
+              'source/controllers/*.js',
+              'import/*/*.js'] 
+
+  grunt.initConfig({
+    pkg: grunt.file.readJSON('package.json'),
+    meta: {
+      banner: '/*!\n' + 
+              ' * <%= pkg.name %>\n' +
+              ' * Version: <%= pkg.version %>\n' +
+              ' * website: <%= pkg.website %>\n' +
+              ' *\n' +
+              ' * Copyright <%= grunt.template.today("yyyy") %>, <%= pkg.author %>\n' +
+              ' * <%= pkg.license.type%>\n' +
+              ' * <%= pkg.license.url%>\n' +
+              ' * \n' +
+              ' * Date: <%= grunt.template.today("dd mmm yyyy") %>\n' +
+              ' */\n\n'
+    },
+    jshint: {
+      files: ['source/*.js', 'source/controllers/*.js']
+    },
+    concat: {
+      options: {
+        banner: '/*!\n' + 
+              ' * <%= pkg.name %>\n' +
+              ' * Version: <%= pkg.version %>\n' +
+              ' * website: <%= pkg.website %>\n' +
+              ' *\n' +
+              ' * Copyright <%= grunt.template.today("yyyy") %>, <%= pkg.author %>\n' +
+              ' * <%= pkg.license.type%>\n' +
+              ' * <%= pkg.license.url%>\n' +
+              ' * \n' +
+              ' * Date: <%= grunt.template.today("dd mmm yyyy") %>\n' +
+              ' */\n\n'
+      },
+      dist: {
+        src: files,
+        dest: '<%= pkg.destination %><%= pkg.file_name %>-<%= pkg.version %>.js'
+      }
+    },
+    uglify: {
+      dist: {
+        src: files,
+        dest: '<%= pkg.destination %><%= pkg.file_name %>-<%= pkg.version %>.min.js'
+      }
+    }
+  });
+
+  grunt.loadNpmTasks('grunt-contrib-uglify');
+  grunt.loadNpmTasks('grunt-contrib-concat');
+  grunt.loadNpmTasks('grunt-contrib-jshint')
+  grunt.registerTask('default', ['jshint', 'concat', 'uglify']);
+};