I need a shapeshift style automatic swap cryptocurrency exchange using: https://github.com/Shapeshift-Public source i only need 4 currencies and no fees. These are the only 2 changes i need from the source code need it functional and set up on my domain.

I want no fees from my side so the minimal mining fee or whatever needed is all I require. Whichever option has the least if not zero fee will be the way to go. I would also like to add a currency not listed their as possible. Needs to be simple but functional

Currencies:
BTC
ETHER
DASH
LTC
(1 other if possible)

SEE ALSO
https://github.com/changelly/api-changelly