Add background styling and centering.
Merge pull request #4 from SterlingVix/style/background

Add background styling and centering.
Merge branch 'master' of https://github.com/HowlinVix/RobotsWillWalk into feat/marching
enemyCircle moves from right to left
Merge pull request #5 from howlinmad/feat/marching

Feat/marching
Add ProtoBot to explore inheritance. Added robot pictures.
Add walking robot. Lots of cleanup necessary.
Merge pull request #6 from SterlingVix/feat/robotIcons

Feat/robot icons