Abstract models access.
Start findOne method.
Check if callback is function.
Throw error if callback is not function.
Callback error if no result.
Add search method.
Remove extra callback.
Close client after search.
Indentation.
Rename bhajan model test file.
Update database model require for bhajan model.
Add API routes.
Enable API routes; parse bhajan_id.
Move database cleanup to before() function in tests.