Added projects for S.S. and the demo.
base AI class
Changed game screen dimensions

Added GameConstants class and updated .gitignore to ignore image files
Basic AI movement

Created a base level class for every game object.  Created a child class
of AI, Scientist.
Update and Draw methods
Basic movement demo
Added a simple system for displaying messages.
Removed the Monogame demo folder
merged feature/AI
base invention class
constructor and properties added
renamed Base_Invention.cs to Invention.cs
Updated Inventions
Commented, added properties and regions, starting adding actual code.
added a floor class

the floor class extends gameobject
added a ladder class

ladder extends gameobject
Invention now extends AI

Also created an Image/ directory and Font/ directory in Content/
Please make sure that you add your images and fonts in the correct
directory so we can keep a clean and organized content environment
Added classes and basic code for all inventions.
Added the crude beginnings of a test environment.
Merge remote-tracking branch 'origin/feature/AI' into develop

Conflicts:
	SleepyScientist/SleepyScientist/Base_Invention.cs