title: node-sass-middleware not compiling
body: <p>Im trying to get the node-sass-middleware working with with express. The app runs with no errors </p>
  
  <pre><code>...(modules)
  var sassMiddleware = require('node-sass-middleware');
  
  var routes = require('./routes/index');
  
  var app = express();
  
  // uncomment after placing your favicon in /public
  //app.use(favicon(__dirname + '/public/favicon.ico'));
  app.use(logger('dev'));
  app.use(bodyParser.json());
  app.use(bodyParser.urlencoded({ extended: false }));
  app.use(cookieParser());
  //---- LOAD SASS -----//
  // adding the sass middleware
  var srcPath = __dirname + '/scss';
  var destPath = __dirname + '/public/stylesheets';
  app.use(sassMiddleware({
    src: srcPath,
    dest: destPath,
    debug: true,
    outputStyle: 'compressed'
  }));
  
  app.use(express.static(path.join(__dirname, 'public')));
  </code></pre>
  
  <p>Can anyone see anything wrong with the way I'm attempting to compile the sass?</p>
  
  <p>file structure :</p>
  
  <pre><code>app
  controllers
  routes
  public
  -stylesheets
  scss
  ...
  </code></pre>