#343 - Created an internal build for testing with APN support.

New binary called WP Internal is signed with enterprise certificate to support push notifications.
#343 - Fixed archive to not include WordPress.app (only internal)
#343 - Rotated icon 180 degrees to distinguish internal build
#343 - Eliminated the space in the new target to prevent build issues

WordPress-Internal is the new target name, bundle display name remains WP Internal.
Merge pull request #351 from wordpress-mobile/internal-build

Internal build