Added note to README about what the library is and is not.
Catch exceptions, pass the information on to the user, and let the user decide whether or not they want to write anything to stdout.  The user must register error handlers via Bot.addErrorHandler to receive error messages.
Accumulate trade history and pass that to the trader, instead of only the stuff that was returned from the last call to BTCe.
Added error handlers to the sample bots.