Merge pull request #15 from seancavanaugh/update_databaseAPI

Updated databaseAPI to handle strings
FoodFinderActivity changes (still need to do populateResultsList)
Merge pull request #16 from jcurtiss/foodFinderActivity

FoodFinderActivity changes
code completed for foodfinder. need to test still with JDBC
Merge pull request #17 from jcurtiss/foodFinderActivity

code completed for foodfinder. need to test still with JDBC
Added database package and threading example to foodfinder