Handle expires_in int to float changes on API

[humanbeinc]

No description provided.

[makst]

@humanbeinc Could you post a response, that breaks SDK in case if ExpiresIn is of type int? The thing is that there was no changes in the API regarding the type of ExpiresIn.

[cremark]

I am getting the same error when starting the WebDemo and selecting any account.

The response is as follows:
{"access_token": "A9fyiYdpzU79iVihn99V8OSdOT_gfPMqyKKsm4FA3v-ycjWzjSJ6_gyrp2VTXjPlkgd7mbbPzmeuZOh0afTTe3Su3voWuWTnsIm3eubENlh4", "token_type": "Bearer", "expires_in": 3600.0, "scope": "accounts=ro balance=ro transactions=ro user=ro clients=ro payments=rw securities=ro submit_payments process"}