Picme 1.1.1

Changes since version 1.1:
- Fixed bug where search would not execute if the user chose to reindex iPhoto metadata.

Changes since version 1.0:
- Search algorithm overhauled for increased speed.
- Keyword combinations now chosen based on number of photos. For example, if a user has a keyword set that requires the keyword "family" and allows the keywords "vacation" and "birthday" and the number of images that match "family AND birthday" is twice the number that match "family AND vacation" then the keyword combination "family AND birthday" will be chosen twice as often as the combination "family AND vacation."