Updated the prefill data to include game details, and more games
Updated instructions, and change db-prefill to runnable script
Reordered library import statements
Merge pull request #155 from soedar/update-prefill

Update Prefill data to include more games
Added preliminary gameIDsByUserID set and game list filtering on userIDs
Fixed bugs with gameIDsByUserID and developer game list filter
Fixed bug with JSON parsing gameIDsByUserID
Updated sample usage
removed unnecessary else if
Changed user to developer in variable names
Resolevd merge conflicts