-------------------ADDING BLOCKS-------------------
CAPI.addBlock(blocknamehere);

expample
CAPI.addBlock(Block.monsterspawner);

------------ADDING BLOCKS WITH SUBTYPES------------
CAPI.addSubtypeBlock(blocknamehere, damageValue);

expample
CAPI.addSubtypeBlock(Block.cloth, 14);

------------ADDING ITEMS WITH SUBTYPES-------------
CAPI.addSubtypeItem(item, damageValue);

expample
CAPI.addSubtypeItem(Item.dyePowder, 14);