samplecoin eth.transact() data format

[cdetrio]

The samplecoin example unbin() data formatting doesn't work properly. Digging through eth-go turned up the problem, which is this line expecting arguments to be separated by newlines.

Using join("\n") to prepare the data works correctly. I haven't tested what difference .pad(32) makes, but it seems to work without it.

[cdetrio]

unbin() works correctly now. it was fixed here.