Willys MB - unsorted stuff

**This is a 'thing in progress'.**
**Adding stuff from time to time, mostly .png (screenshots) and .lua files (for IceSL editor and slicer)

Some unsorted stuff for an 1:10 Willy MB
- _Tyre_: Based on bret4. Use 'tyre.lua' in IceSL to create an hollow tyre (place MB_Jeep_Tire.stl in the same directory. Prints fine without support (SoftPLA, perimeter, 5 shells, 5 covers, 20%infill, no support, 0.2mm layer height, filament: YS (Guangzhou Yousu Plastic Technology Co.) SoftPLA, 1.75mm(actual 1.58mm dia), black, at 250°C with 20mm/s, heated bed 90°C coated with jelly). Added 15.08.2017, updated 17.08.2017.
- _Jerry can and holder based on ossum and Intashu_: Another jerry can with a detailed holder. The jerry can prints fine standing, the jerry can holder prints fine standing with support, and the strap guide can be printed with 0.2mm layer height if laying flat on the print bed. Take some gift ribbon (SoftPLA could be an option, too). Added 15.08.2017.
- _Rims and spare tyre holder b