Extra pieces for Pocket Dungeons

These are some extra pieces for [Pocket Dungeons](http://www.thingiverse.com/thing:59110).

There are alternative counters with small models instead of the original pictograms and corridors with both left and right forks not present in the original game.

OpenSCAD source is included if you wish to change the parameters such as brick size, path width or tile thickness.

Press "Open in Customizer" if you wish to generate any of the other tiles.