Update readme with installation steps

README.md

@@ -9,3 +9,41 @@ It's based on the availibity of all participants for specific days.
 - [API endpoints](https://git.armada.digital/meeting-planner/documentation/src/branch/master/api-documentation.md)
 - [Database design](https://dbdiagram.io/d/5e769ab14495b02c3b88936f)
 - [Flowchart](https://app.diagrams.net/#Uhttps://git.armada.digital/meeting-planner/documentation/raw/branch/master/meetingscheduler.drawio)
+
+
+## Backend installation
+
+### 1 | Create a database on Postgres
+Any up to date postgres should work.
+You will need the following informations:
+- username
+- password
+- hostname
+- database
+
+### 2 | Create and/or configure an `.env` file
+
+- Create a `.env` file at the root of the backend folder
+- Replace all variables noted with `$` below, and save it to the `.env` file
+
+```
+NODE_ENV=development // This can't be changed for now
+PORT=$port_number
+DATABASE_URL=postgres://$db_user:$db_user_password@$hostname:5432/$db_name
+JWT_SECRET=$long_random_characters
+```
+### 3 | Installation of packages (NodeJS needs to be installed)
+- `npm i`
+
+### Migrate tables to database
+- `npx knex migrate:latest`
+
+### Seed database with dummy content (optional)
+Running this will add some users and meetings.
+- `npx knex seed:run`
+
+**List of users**
+| Liza             | Emile             | Jack             | Cynthia             | Celine             |
+|----------------- |------------------ |----------------- |-------------------- | ------------------ |
+| liza@example.com | emile@example.com | jack@example.com | cynthia@example.com | celine@example.com |
+| liza-password    | emile-password    | jack-password    | cynthia-password    | celine-password    |

data/how_to_do_migration.md

@@ -1,5 +0,0 @@
-## How to do a migration
- - Create `.env` to the root folder
- - Add the database url to the `.env` file: 
- `DATABASE_URL=postgres://username:password@host:port/database`
- - Run `npx knex migrate:latest`