Update README.md

Thirst is working, part 1 before rooms and water.

Settlers now eat in their idle time. Part 1 of eating, until dining rooms are implented.

Settlers can get hungry. This is a work in progress - they all die in 8 days.

Proximity sensors now pass test.

Proximity sensor includes output in node graph.

Proximity sensors are buildable.

Fix appearance of float guage. Node editor now shows on/off status.

Machines editor shows on/off.

Levers much more obviously red/green.

Support removal can properly trigger collapses.

Miners no longer try to stand on tiles they are about to remove via channeling.

You can now build structural supports, and remove them via a lever.

Remember to serialize the stunned counter.

Add being stunned as a result of falling.