Initial commit. This has the following features:

- Working heatmap renderer.
- Base app functionality

Bugs:
-For some reason, the max portion of the render algorithm isn't being skipped (fragment shader).

To Do:
-Needs sliders to control shader variables.
-Acquire image-based 3D data set to make new sample renderer

Considerations:
Why keep this as just a pure volume renderer and try to have features to display streaming data?