gulpfile.js

gulp.task('dist',function(){
  fs.readFile('./app/index.html', {encoding: 'utf-8'} ,function (err, data){
    //pega todos as dependencias vindas do bower
    var patternBower = /(bower.+js)/g
      , appPath = 'app/'
      , bowerDependencys = data.match(patternBower);
      for(var i = bowerDependencys.length -1 ; i ; i--){
        var srcPath = appPath + bowerDependencys[i]
          , destPath = appPath + 'js/vendor/'
          , archiveName = bowerDependencys[i].split('/').reverse()[0];

        fs.writeFileSync(destPath + archiveName, fs.readFileSync(appPath+bowerDependencys[i])); // copia de arquivos sincrona
      }
  });
})