-r requirements.txt
mock
nose
sure==1.2.24
coverage
freezegun
flask
boto3>=1.4.4
botocore>=1.4.28
six

-r requirements.txt
mock
nose
sure==1.2.24
coverage
flake8
freezegun
flask
boto3>=1.4.4
botocore>=1.4.28
six

Add flake8 to dev dependencies.
Add flake8 to dev dependencies.
