Copy FW to WearButton Arduino example
Added simple Button dimmer example

* Uses Button lib: https://github.com/virgildisgr4ce/Button
* Press dims by 25% until dark
* Hold (1s) resets to 100% brightness
Proper power-up/cool-down to seizure mode

For some reason this is really fun.
Rename WearButton to ButtonExample. Shrink it.
Add GitHub URLs to includes
HA! HA! I'm altering boundary conditions.
Merge pull request #2 from blinkiverse/wear-button

Simple Button example Arduino sketch