React.PropTypes is deprecated in React@15.5

Now there are warnings from redux-router.

> Warning: Accessing PropTypes via the main React package is deprecated, and will be removed in React v16.0. Use the latest available v15.* prop-types package from npm instead. For info on usage, compatibility, migration and more, see https://fb.me/prop-types-docs

Find where redux-router uses React.PropTypes, likely in component files. Replace those imports with the separate 'prop-types' package. Check the project's dependencies to see if prop-types is already included, and update import statements accordingly. Verify the fix by running any existing tests or checking that the warning disappears.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.