message: Updating the docs a bit to be more informative
diff: @@ -45,23 +45,37 @@ Running the server
  Docker:
  ```sh
  -export MYSQL_HOST=127.0.0.1
  export MYSQL_PASSWORD=....
  -export MYSQL_USER=root
  -export MYSQL_DATABASE=a12nserver
  -docker run -it --rm -p 8531:8531 --name a12n-server-01 a12n-server
  +export MYSQL_USER=username
  +export MYSQL_DATABASE=databasename
  +docker run -it --rm -p 127.0.0.1:8531:8531 --name a12n-server-01 a12n-server
  ```
  Not docker:
  ```sh
  -export MYSQL_HOST=127.0.0.1
  export MYSQL_PASSWORD=....
  -export MYSQL_USER=root
  -export MYSQL_DATABASE=a12nserver
  +export MYSQL_USER=username
  +export MYSQL_DATABASE=databasename
  make start
  ```
  +Note: There are several environment variables available to modify the a12n-server
  +behavior. See the table below.
  +
  +| Name | Required? | Default | Description |
  +|-------------------------------:|----------:|----------------------:|---------------------------------------------------------------|
  +| MYSQL_HOST | | 127.0.0.1 | IP address to connect to where the `mysql-schema` was applied |
  +| MYSQL_USER | Yes | | User to connect to MySQL with |
  +| MYSQL_PASSWORD | Yes | | Password to authenticate to MySQL |
  +| MYSQL_DATABASE | Yes | | Database where the `mysql-schema` was applied |
  +| MYSQL_INSTANCE_CONNECTION_NAME | | | |
  +| PUBLIC_URI | | http://localhost:8531 | |
  +| PORT | | 8531 | Port to host the API on. |
  +| SMTP_URL | | | See below section, [Optional](#Optional) |
  +| SMTP_EMAIL_FROM | | | See below section, [Optional](#Optional) |
  +
  +
  Creating the first user
  -----------------------
  