Cryness Double Slabs

This mod allows you to place Double Slab blocks in Minecraft with 2 different kind of slabs.
That means in short, you can place every Slab on any other Slab. 
This also works with every ModSlab that extends SlabBlock, so it should be compatible with every other Mod.
This Mod does not add any Items. It does not add any usable Blocks. The Slabs in game will be auto-replaced by my Block and take on the Model of the Placed Slabs.