Update README.md

Author: tretdm

README.md

@@ -10,7 +10,7 @@ We will be happy to accept your bugreports in [our bug-tracker](https://github.c
 ## Building
 You can build your app from source in Android Studio current version. [Download](https://developer.android.com/studio)
 
-## Used Library
+## Used Libraries
 _OpenVK API client and some UI layouts based on [OpenVK Legacy](https://github.com/openvk/mobile-android-legacy) (GNU Affero GPL 3.0+)_
 
 1. [AndroidX](https://developer.android.com/jetpack/androidx) (Apache License 2.0)
@@ -19,6 +19,8 @@ _OpenVK API client and some UI layouts based on [OpenVK Legacy](https://github.c
 4. [MonetCompat](https://github.com/KieronQuinn/MonetCompat) (X11 License)
 5. [OkHttp](https://square.github.io/okhttp/) (Apache License 2.0)
 6. [libVLC](https://www.videolan.org/vlc/libvlc.html) (LGPL 2.1)
+7. [MaterialSearchBar](https://github.com/mancj/MaterialSearchBar) (X11 License)
+8. [SectionedRecyclerViewAdapter](https://github.com/luizgrp/SectionedRecyclerViewAdapter)
 
 ## OpenVK Refresh License
 [GNU (Affero) GPL v3.0](https://github.com/openvk/mobile-android-refresh/blob/main/COPYING) or later version.