Add screenshots to readme.
Fix readme image links.
Add comments to screenshots
Create setup script for new type plugin system.
Plot window show complete path.
Improve surface coloring, temporary display log on surface.
Remove log sfrom surf plot.
Remove single plot, dual plot overview has fixed height.
Add slice plots to surface plot.
Improve data representation on 2D plot.

Add horizontal and vertical slice plots at mouse point. Improve colors
on surface plot.