Added option 'dontUpdateState' for TradeOffer.accept (#180)
Added option 'dontUpdateState' for TradeOffer.accept (#180)

* Added option 'dontUpdateState' for TradeOffer.accept

Now you can disable updating state of the offer after accepting

* Returning body of response, not `accepted` when acccepted offer with dontUpdateState

* Now `dontUpdateState` is argument of `TradeOffer.accept`

* `dontUpdateState` is not `updateState` and default is true

* Returning `pending` or `accepted` in TradeOffer.accept without updating state

* `updateState` now is `skipUpdateState` and default is false

DoctorMcKay/node-steam-tradeoffer-manager