Add models
Fix pep8 warnings
Update Company model
Update app name
Add endpoints in app.yaml
Implement company list api
Add get_by_symbol class method for Company model
Implement get company api
Implement Company new class method
Implement company create api
Fix typo
Fix create api
Implement get_all companies class method
Update indexes
Fix return object in get api method
Fix company list api
Remove debug logging
Update README