ignoreReEnterExitSeconds wording

[deanlyoung]

ignoreReEnterExitSeconds optional, in minutes, default: 0, if set to 0 than every enter/exit will trigger state change otherwise the state will only change if no re-enter/exit occurs in specified number of seconds

Wording in the readme is a bit confusing as the name of the setting uses the word Seconds and the description uses both seconds and minutes.