auto trading bot on cryptsy website

currently, only for trading between doge and btc.

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>
add .gitignore to ignore private data in config.php

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>
lib: remove message and remove exit code

library should not output messages.
It should retry if the server failed to respond the correct payload.

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>
bot: messy update

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>