Slime Clicker v2.0 Patch

So I had a lot of fun while working on this update, and I learned a lot of new things. So, here's the changelog:

• Added 2 new upgrades, SlimeBux which increases money amount by 2, so you get extra cash. By default, you get $1 only. The next upgrade is, Dr. Chef, Dr. Chef will increase your slime per second rate by 2, by default, it's set to 0.
• A savefile system so that you don't lose your progress.
• Added some post-processing effects.