add gitignore
change readme

update readme

…

…

…

…

…

…

…

…

…

…
play sounds when digging
play sounds when placing
Merge branch 'mybranch1' of https://github.com/HybridDog/simple_robots into HybridDog-mybranch1

Merged manually.
I added HybridDog to the "who made this" section in the README,as that's why it's there.
Merge branch 'HybridDog-mybranch1'