Add migration guide

README.md

@@ -24,6 +24,7 @@ Documentation and usage info can be found in [docs.md](docs.md).
 - [v2.0.0](migration-guides/v2.0.0.md)
 - [v3.0.0](migration-guides/v3.0.0.md)
 - [v4.0.0](migration-guides/v4.0.0.md)
+- [v5.0.0](migration-guides/v5.0.0.md)
 
 ## Contribution
 

migration-guides/v5.0.0.md

@@ -0,0 +1,17 @@
+# v5.0.0 Migration Guide
+
+The only breaking change in this version is that `FlashMessage` now expects separate `children` and `isError` props, rather than a single `message` prop. This allows the component to be used without needing to use `redux-flash`.
+
+You should update any instances of `FlashMessage` like so:
+
+(Note: this change is not necessary if you are using `FlashMessageContainer` instead of `FlashMessage` directly.)
+
+```jsx
+
+// Before, where "message" was a redux-flash message object:
+<FlashMessage message={message} />
+
+// After:
+<FlashMessage isError={message.isError} {message.props}>{message.message}</FlashMessage>
+
+```