Reformating

Using avcodec_open2 instead of avcodec_open

Update av_read_frame_flush with new functions for flushing

Extented dict.h section

Added some av_opt functions to opt.h section

MKTAG added

Added TODO for Python "constants" to be updated

Comment added to initialization

Update of functions in avformat.h section

Update of structs and enums of avformat.h section

Update of functions in avcodec.h section

AVPictureStructure added to avcodec.h section

AVIOInterruptCB added to avio.h section

Update README

Update PKG-INFO