Update game.js.coffee
Add the needed divButton css class

Makes it so text cannot be selected within the class and the pointer is made to that of a button.
Make class applicable for the project

The code came from one of my personal projects, so the class name needed to be changed to work for this project.
Merge pull request #4 from onelessthaninfinity/patch-1

Fix Selection Issue
Merge pull request #3 from cloudland3/patch-1

Update game.js.coffee
Update README.md
show cashGen objects at the right time
refactor assets into their own class