Update LICENSE.md
Merge pull request #1 from dietmarw/patch-1

Update LICENSE.md
Places binary image into proper place and uses PNG format instead.
Standardises Icons (with the use of the modern one) and fixes illegal number format.
Merge pull request #3 from dietmarw/ImproveIcons

Standardises Icons (with the use of the modern one) and fixes illegal nu...
Merge pull request #2 from dietmarw/png-image

Places binary image into proper place and uses PNG format instead.
Moved .stl files for excavator example to Resources/Shapes/Excavator