update README.md file from cookbook 'video_pro'
release cookbook 'audio_pro' version 0.3.1
release cookbook 'core' version 0.20.0
release cookbook 'audio_pro' version 0.3.2
release cookbook 'graphics_pro' version 0.3.1
release cookbook 'browsers' version 0.4.4
release cookbook 'base' version 0.16.0