Merge pull request #15 from aellawind/master

Incorporated game logic calculations into fitbit data retrieval, created endpoint for refresh, modified user schema
Flattened the item and solo attributes so they are now not a nested object
Merge pull request #16 from conorfennell/flatten_models

Flattened the item and solo attributes so they are now not a nested object
Add equipped items object to schema
Merge pull request #17 from fatchicken007/master

Add equipped items object to schema
Make sure the date last checked is included in the data
Remove API keys from code, they are provided in processes' env variables