Pocket Edition v0.2.1 alpha

v0.2.1 alpha added new control options, as well as other changes and fixes.

Additions

 * New controller option – Split Touch controls
 * This option may be more suitable for devices with larger screens. The cross hair is in the right half of the screen.
 * Added bookshelves in Creative mode.
 * Sugar cane is now infinite (unable to collect them).

Changes

 * Pigs now naturally spawn.
 * Flying is changed – ascend/descend by sliding from the center button to the up/down button.
 * Bigger screens have more hotbar icons.
 * Blocks now have 'cracking' animation when destroying them.
 * The circle shown when breaking blocks is sharper.