                 ext: '.css'
                 dest: '<%= app.build.path %>/styles/'
         }
-
+        # some cool commands
         shell: {
+            # start chrome driver
             webdriver:
                 command: 'webdriver-manager start'
                 keepalive: yes
-                options:
-                    stdout: yes
+                options: stdout: yes
+            # mark the current build with a stamp in `current`/.build file
+            mark: command: 'echo <%= timestamp %> > <%= app.build.current %>/.build'
         }
 
         karma: {

                current: 'current'
        }

        # grunt-contrib-watch: watch our files for changes
        watch: {


        grunt.task.run 'concurrent:servers'

    # build the project for development (skips minifying code)
    grunt.registerTask 'build-dev', [
                                'coffeelint'
                                'browserify'
                                'less'
                                'clean:current'
                                'copy:current'
                                'shell:mark'
                            ]

    # run end-to-end tests http://docs.angularjs.org/guide/dev_guide.e2e-testing
    grunt.registerTask 'e2e-test', ['clean:e2etests', 'coffee:e2etests', 'concurrent:e2e', 'clean:e2etests']
