INPUT_PULLUP is inconstant to the readme

[smwoodward]

In the readme, it appears that only if you put the 3rd variable in the Debounce Button(2,80,true) that it appears that the pull_down is default, where the default is true.

It might be best to change Debounce.h from 25 Debounce(byte button, unsigned long delay = 50, boolean pullup = true);

to 25 Debounce(byte button, unsigned long delay = 50, boolean pullup = false);

[wkoch]

I think you're right, but I don't have an arduino to test code changes and have no time to maintain this library, so I'll archive this repo. Sorry about that and thanks for being helpful.