Update README.md

Author: stephencelis

README.md

@@ -125,6 +125,9 @@ For [Vapor][vapor] bindings to URL Routing, see the [Vapor Routing][vapor-routin
 The documentation for releases and main are available here:
 
 * [main][swift-url-routing-docs]
+* [0.5.0](https://pointfreeco.github.io/swift-url-routing/0.5.0/documentation/urlrouting)
+* [0.4.0](https://pointfreeco.github.io/swift-url-routing/0.4.0/documentation/urlrouting)
+* [0.3.0](https://pointfreeco.github.io/swift-url-routing/0.3.0/documentation/urlrouting)
 * [0.2.0](https://pointfreeco.github.io/swift-url-routing/0.2.0/documentation/urlrouting)
 * [0.1.0](https://pointfreeco.github.io/swift-url-routing/0.1.0/documentation/urlrouting)