Is not exactly what you search but it should help you.
On the webwalled service cryptonator.com you can set a autoexchange to BTC

they offer these walleds Bitcoin,Bitcoin Cash,Blackcoin   ,Bytecoin   ,Dash,Dogecoin,Emercoin,Litecoin,Monero,Peercoin,Primecoin,Reddcoin,Ripple,Zcash,Euro,US Dollar,Rubel,Hryvnia

for all these wlaleds you can set a automatic exchange to the curreny you like .



kidn regards