Update README with uf2 file copying instructions

Merge pull request #3 from kgcurran/master

Merge branch 'master' into master

Update README.md

update to use PIMORONI_PICO_PATH variable

Update README.md

Use sleep_ms as a redundancy for refresh in case inky frame is running on battery power

Remove unused fonts

Update README

Fix a layout bug, create README.md

Implement deep sleep mechansim

Organize some files, place all inky_frame specific code into inky_interface.cpp

Integrate tasks payload

Rename example file

Add inky dashboard template file