update readme
update readme

vxvinh1511/TinyColor,GerHobbelt/TinyColor,bgrins/TinyColor,GerHobbelt/TinyColor,pandabamboo90/TinyColor,pandabamboo90/TinyColor,weepy/TinyColor,weepy/TinyColor,vxvinh1511/TinyColor,mwcz/TinyColor,dabassett/TinyColor,bgrins/TinyColor,dabassett/TinyColor,mwcz/TinyColor