yeoman-ember-handlebars not quite as simple if your using YEOMAN scaffolding - self reminder on what got me (since i'm new to grunt / npm etc etc)

yeoman-ember-handlebars-setup

The Grunt.js isn't handlebars ready - folling on from my last hiccups stuff
https://gist.github.com/4503821

//Turns out i need to hookup and write up the grunt stuff.

1. Install https://github.com/dgeb/grunt-ember-templates
2. Update the gruntfile
3. https://github.com/dgeb/grunt-ember-templates/issues/7 this was my issue, make sure you only use 0.2.0 until yeoman uses 0.4 grunt
4. https://github.com/dgeb/yeoman-ember-basic-example/ - follow these guys for setup tips and files...

My edits to Gruntfile

ember_templates: {
          compile: {
              options: {
                  templateName: function(sourceFile) {
                      return sourceFile.replace(/app\/scripts\/templates\//, '');
                  }
              },
              files: {
                  'app/scripts/templates.js': 'app/scripts/templates/**/*.handlebars'
              }
          }
      },

// default watch configuration
    ...
      ember_templates: {
          files: 'app/scripts/templates/**/*.handlebars',
          tasks: 'ember_templates reload'
      },
...


//clean edits
grunt.renameTask('clean', 'yeoman-clean');
grunt.registerTask('clean', 'yeoman-clean ember_templates');