committing.

Merge branch 'master' of https://github.com/BeyondBelief96/AeroliteEngine

deleting uneeded files

Update README.md

Updating Particle2D files to use default constructors/copy/move semantics.

renaming particle.cpp to Particle2D.cpp

Adding function and changing functions for adding/creating 2D particles in AeroWorld2D.

fixing various things.

Fixing config so that it works with doubles and floats.

Updating engine to use smart pointers and more user friendly API.

Implementing spatial hash grid algorithm for broad phase collision detection. Adding IMGUI ui for swapping broad phase algorithms.

Renaming axis aligned bounding box struct.

Using IMGUI to add some more secenes.

Added IMGUI support to 2D physics engine demo project. Added functionality to swap between various demo scenes.

Working on creating my 3D rigid body class.