better test for expired token
better test for expired token

value of 0 was causing a different error than the one i want here
stormpath/stormpath-sdk-node,ck-lee/stormpath-sdk-node,peebles/stormpath-sdk-node,wakashige/stormpath-sdk-node,peebles/stormpath-sdk-node,stormpath/stormpath-sdk-node