Flowers!

Added Lilac, Sunflowers, Tall Roses, Double Tall Grass, Large Fern, and Peony.

Lilac(4) = Poppy(8) + Sapling(8)

Tall Rose(4) = Poppy(8) + Cactus(8)

Double Tall Grass(4) = Tall Grass(16)

Sunflower(4) = Dandelion(8) + Sugar Cane(8)

Peony(4) = Poppy(8) + Leaves(8)
Merge pull request #63 from ribagi/patch-26

Flowers!