updated readme
updated readme

alexgorbatchev/node-crc,IvanSanchez/node-crc,alexgorbatchev/node-crc,alexgorbatchev/node-crc,albertjleo/node-crc,IvanSanchez/node-crc,albertjleo/node-crc,IvanSanchez/node-crc,IvanSanchez/node-crc,alexgorbatchev/node-crc,albertjleo/node-crc,alexgorbatchev/node-crc