Add support for ESP RTC

update version

Update library.properties

Merge pull request sqfmi#28 from sqfmi/1.2.3

update to 1.2.3

Rename README to README.md

Merge pull request sqfmi#17 from sqfmi/1.2.1

added MacPaint

Merge pull request sqfmi#16 from sqfmi/1.2.0

fixed hard coded time in Tetris

Merge pull request sqfmi#15 from sqfmi/1.1.9

added Tetris

added screenshots

Merge pull request sqfmi#8 from sqfmi/1.1.7

Update to 1.1.7