Added environment argument to bluegreen deploy script

Merge pull request #9 from skyscrapers/environment

Add environment argument to specify which tf environment to use

Added a requirements.txt file for the deployment script

1.1.2

Add a requirements.txt file for the deployment script

Fix permissions of deploy script

1.1.1

Give exec permissions to deploy script

Added deploy script

Merge pull request #6 from skyscrapers/bluegreen_deployscript

add deployment script and documentation

Added blue-green deployment script

Merge pull request #6 from skyscrapers/bluegreen_deployscript

add deployment script and documentation