Merge pull request fffaraz#418 from canbal/patch-1

Add Vireo

Author: fffaraz

README.md

@@ -592,6 +592,7 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 * [libde265](https://github.com/strukturag/libde265) - Open h.265 video codec implementation. [LGPL] [website](http://www.libde265.org/)
 * [OpenH264](https://github.com/cisco/openh264) - Open Source H.264 Codec. [BSD] [website](http://www.openh264.org/)
 * [Theora](http://www.theora.org/) - A free and open video compression format. [BSD]
+* [Vireo](https://github.com/twitter/vireo/) - A lightweight and versatile video processing library by Twitter. [MIT]
 
 ## Virtual Machines