📝 Update development init instructions

Postgres added a password requirement in a bug fix update. See docker-library/postgres#681
Also running migrate before upgrade fails for me.

README.md

@@ -61,10 +61,10 @@ pip install -e .
 # Configure the flask application
 export FLASK_APP=manage
 # Setup the database (using a dockerized postgres)
-docker run --name dataservice-pg -p 5432:5432 -d postgres:9.5
+docker run -e POSTGRES_HOST_AUTH_METHOD=trust --name dataservice-pg -p 5432:5432 -d postgres:9.5
 docker exec dataservice-pg psql -U postgres -c "CREATE DATABASE dev;"
-flask db migrate
 flask db upgrade
+flask db migrate
 # Run the flask web application
 flask run
 ```
@@ -158,7 +158,7 @@ Unit tests and pep8 linting is run via `flask test`
 # Install test dependencies
 pip install -r dev-requirements.txt
 # Setup test database
-docker run --name dataservice-pg -p 5432:5432 -d postgres
+docker run -e POSTGRES_HOST_AUTH_METHOD=trust --name dataservice-pg -p 5432:5432 -d postgres
 docker exec dataservice-pg psql -U postgres -c "CREATE DATABASE test;"
 # Run tests
 flask test