Update README.md

README.md

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 [Show full video](https://drive.google.com/file/d/1GFlTJvdsJaSnFhpWDKBIYr5-DzZkT0vP/view?usp=sharing)
 
 ![alt text](https://github.com/VyacheslavPridchin/VITER.TestApp/blob/129dd6066141ac564d878893f4a99d665c769ca7/Media/VITER-AppVideo.gif)
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+## Key features
+- Music volume control
+- Save music volume after restart
+- Interactions with "Grey Squares"
+- Ability to put "Servy square" in "Pocket"
+- Two types of "Pockets": with "Grey Square" blocking and without blocking
+- Animated change of "Gray squares" to the size of "Pockets"
+- Search for completely filled "Pockets" vertically and horizontally, as well as the animation of deleting "Gray Squares" in case of a complete match of a row or column
+- Output of results after transferring the "Grey Square" to the "Pockets" grid
 ## Release
 [Show release](https://github.com/VyacheslavPridchin/VITER.TestApp/releases/tag/TestApp) or [Show release on Google](https://drive.google.com/file/d/1GcXUx-ODoZoI7HbNnPxFMP_gzHPAu_ZV/view?usp=sharing)