create SSL certificates for thin / heroku-forward
# create an SSL folder for your environment.
mkdir -p ~/.ssl/development/
cd ~/.ssl/development/
# create private key / certificate for your app
# /!\ remember to define the expected common name for you development hostname [if your using localhost, use localhost. If you are using a custom domain, use it]
openssl genrsa -out my_app_key.pem 1024