Generating skylines 2

-prefab for the platforms and material for it
-new empty object named Platform Manager
-new Platform prefab: Number Of Objects to 6,  Recycle Offset to 20,
Start Position to (0, 0, 0),  Min Size to (5, 1, 1), and its Max Size
to (10, 1, 1)
-new fields Min Gap, Max Gap, Min Y, and Max Y to (2, -1.5, 0), (4,
1.5, 0), -5, and 10 respectively.