update readme

README.md

@@ -23,6 +23,15 @@ This package allows to set values to a map which will expire and disappear after
 
 [Here](https://pkg.go.dev/github.com/zekroTJA/timedmap/v2) you can read the docs of this package, generated by pkg.go.dev.
 
+> [!IMPORTANT]  
+> The package has been updated to `v2` which will introduce breaking changes to `v1`.
+> - The package now requires a minimum Go version of `v1.19`.
+> - `TimedMap` and corresponding constructor function now take type parameters for key and value types for improved type safety.
+> - Sections have been removed in favor of performance and simplicity of the package.
+> - Previously deprecated functions have been removed.
+>
+> If you experience issues with `v1`, please create an issue with the specific version mentioned. `v1` will still receive updates for bugs and incosistencies alongside `v2`.
+
 ---
 
 ## Usage Example
@@ -74,7 +83,7 @@ func printKeyVal(tm *timedmap.TimedMap[string, int], key string) {
 }
 ```
 
-Further examples, you can find in the [example](examples) directory.
+Further examples, you can find in the [examples](examples) directory.
 
 If you want to see this package in a practcal use case scenario, please take a look at the rate limiter implementation of the REST API of [myrunes.com](https://myrunes.com), where I have used `timedmap` for storing client-based limiter instances:  
 https://github.com/myrunes/backend/blob/master/internal/ratelimit/ratelimit.go