Fixed a bug and added x-Days.

[FrilledShark]

If Poloniex return a error the bot shuts down, i have added a 60 sec delay before checking again.
The bot will run longer before hitting a error now.

[Mikadily]

X-days is a good idea.

But for the error, not sure how can it happen. Will have to look at it closer. My bot literally runs over a month without restart, without a problem. Perhaps you use Windows?

[FrilledShark]

I use a raspberry pi, and it randomly gets to a error while running. I'm not 100% sure about it. It's says that my keys are invalid.

[FrilledShark]

Don't merge yet, my branch have some bugs.

Fixed

[Nixtren]

Lately my bot has been catching Poloniex errors frequently. It seems their API sometimes gets overloaded. Glad to see someone implemented a check so I don't have to :P

[Mikadily]

Please check another branch which is more robust: https://github.com/Mikadily/poloniexlendingbot/tree/multithreading

[rnevet]

A timeout on requests has been added as part of this pull requests:
#69

I think this pull request needs to be rebased on the current master - with only the xdays change included and extended to include also command line parameter.

[chfast]

I like the x-day feature.

[FrilledShark]

I have made a new pull request. #108
Look at that one instead of this.