code: function createContainer(cluster, options, callback) {
    var blobSvc = azure.createBlobService(cluster.account, cluster.key);
    var container = cluster.container || options.container;
    blobSvc.createContainerIfNotExists(container, function(error, result, response) {
      if (error) {
        return callback(error);
      }
      return initializeContainer(blobSvc, container, options, callback);
    });
  }
docs: Create an Azure Container
  @param {Object} cluster Azure Cluster Info
  @param {Object} options Options passed to UploadFS library
  @param {Function} callback Callback to be called when operation is terminated
  @return {any} Returns the initialized service