added migrations for instant delivery

node_modules/react-router/lib/actions/LocationActions.js

@@ -0,0 +1,25 @@
+/**
+ * Actions that modify the URL.
+ */
+'use strict';
+
+var LocationActions = {
+
+  /**
+   * Indicates a new location is being pushed to the history stack.
+   */
+  PUSH: 'push',
+
+  /**
+   * Indicates the current location should be replaced.
+   */
+  REPLACE: 'replace',
+
+  /**
+   * Indicates the most recent entry should be removed from the history stack.
+   */
+  POP: 'pop'
+
+};
+
+module.exports = LocationActions;