code: function createManifest(manifest, callback) {
      assert.object(manifest, 'manifest');
      assert.string(manifest.name, 'manifest.name');
      assert.string(manifest.template, 'manifest.template');
      assert.string(manifest.path, 'manifest.path');
  
      return (this.post('/manifests', manifest, callback));
  }
docs: --- Manifests 
  Create a manifest
  
  @param {Function} callback: of the form f(err, app).