Update README.md

Author: devemux86

README.md

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 <img src="docs/logo/VTM.svg" style="bottom:0;" width="200" align="right">
 
+OpenGL vector map library - running on Android, iOS, Desktop and browser.
+
 VTM (Vector Tile Map) was developed within the [OpenScienceMap](https://github.com/opensciencemap) project.
 
 **This fork continues VTM development and provides compatibility with [Mapsforge](https://github.com/mapsforge/mapsforge).**