Merge pull request #11 from PAUCHOU/kevin2

tests added
Merge pull request #12 from PAUCHOU/kevin2

validations added
Merge pull request #13 from PAUCHOU/kevin2

revised validation
create api_calls controller and puts results to terminal
Merge pull request #14 from cameronjacoby/master

create api_calls controller and puts results to terminal, API key saved as an environment variable
api results for price query save to db
Merge pull request #15 from cameronjacoby/master

api results for price query save to db
api calls added