Add react-router content

content/roadmaps/103-react/content/102-react-ecosystem/100-routers/100-react-router.md

@@ -1 +1,8 @@
-# React router
+# React Router
+
+React router is the most famous library when it comes to implementing routing in React applications.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Official Website' href='https://reactrouter.com/'>React Router — Official Website</BadgeLink>
+<BadgeLink colorScheme='blue' badgeText='Official Docs' href='https://reactrouter.com/docs/en/v6/getting-started/tutorial'>Getting Started Guide</BadgeLink>
+