added node compatibility to tinycolor.js
added node compatibility to tinycolor.js

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