Update README.md
Added package `slices`
@@ -398,6 +398,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
* [set](https://github.com/StudioSol/set) - Simple set data structure implementation in Go using LinkedHashMap.
* [skiplist](https://github.com/MauriceGit/skiplist) - Very fast Go Skiplist implementation.
* [skiplist](https://github.com/gansidui/skiplist) - Skiplist implementation in Go.
+* [slices](https://github.com/srfrog/slices) - Functions that operate on slices; like `package strings` but adapted to work with slices.
* [timedmap](https://github.com/zekroTJA/timedmap) - Map with expiring key-value pairs.
* [treap](https://github.com/perdata/treap) - Persistent, fast ordered map using tree heaps.
* [trie](https://github.com/derekparker/trie) - Trie implementation in Go.
