update README.md

create img_cli.py

create imgcompresslib/fractal.py

create imgcompresslib/lzw.py

create imgcompresslib/rle.py

create imgcompresslib/bmp_utils.py

create imgcompresslib/__init__.py

update README.md

create cli.py

create compresslib/gilbert.py

create compresslib/bookstack.py

create compresslib/adaptive_haffman.py

create compresslib/shannon.py

create compresslib/fano.py

update compresslib/huffman.py

create compresslib/huffman.py

create compresslib/__init__.py

delete compresslib

create compresslib