Added HarfBuzz reference in README file

Author: mta452

README.md

@@ -9,7 +9,7 @@ Tehreer is a library which gives full control over following text related techno
 * Text Typesetting
 * Text / Glyph Rendering
 
-It is a wrapper over mature C libraries, [FreeType](https://www.freetype.org), [SheenBidi](https://github.com/mta452/SheenBidi) and [SheenFigure](https://github.com/mta452/SheenFigure). So a part of the library has been written in JNI in order to access the functionality of said libraries.
+It is a wrapper over C libraries, [FreeType](https://www.freetype.org), [SheenBidi](https://github.com/mta452/SheenBidi) and [HarfBuzz](https://github.com/harfbuzz/harfbuzz). So a part of the library has been written in JNI in order to access the functionality of said libraries.
 
 ## Screenshots
 <img src="./screenshots/001.png" width="170"> <img src="./screenshots/002.png" width="170"> <img src="./screenshots/003.png" width="170"> <img src="./screenshots/004.png" width="170"> <img src="./screenshots/005.png" width="170"> <img src="./screenshots/006.png" width="170">