Add to docs - postgres setup

[joeflack4]

Description

1. Update docs to erase sqlite stuff

2. Remove sqlite stuff from the codebase as well

3. Update docs to include postgres setup

env var: postgresql+psycopg2://pmaapi:pmaapi@localhost/pmaapi

creating a database

1. step 1 - load psql type: psql
2. Step 1 - create db
   • Create - CREATE DATABASE <db>; (edited)

literal command: CREATE DATABASE pmaapi; (edited)

3. make username and pw syntax:
   • Create - CREATE USER <user>;
   • Make PW - ALTER USER <user> WITH PASSWORD '<pw>'; (edited) example: CREATE USER pmaapi; ALTER USER <user> WITH PASSWORD 'pmaapi';

Joe Flack [2:14 PM]

4. give the user access to the database:
   • Grant Permissions - GRANT ALL PRIVILEGES ON DATABASE <db> TO <user>; example: GRANT ALL PRIVILEGES ON DATABASE pmaapi TO pmaapi;