Update scroll tool with changes from MC 1.7 (#31)

New Blocks:
DIRT, SAND, LOG_2, LEAVES_2, ACACIA_STAIRS, DARK_OAK_STAIRS,
STAINED_GLASS, STAINED_GLASS_PANE, RED_ROSE, DOUBLE_PLANT

Updated Blocks:
LEAVES, WOOD_STEP, WOOD_DOUBLE_STEP, MONSTER_EGGS, DIODE_BLOCK_OFF,
DIODE_BLOCK_ON, REDSTONE_COMPARATOR_OFF, REDSTONE_COMPARATOR_ON