More explicit naming

{{cookiecutter.project_slug}}/env.example

@@ -1,18 +1,29 @@
+# PostgreSQL
 POSTGRES_PASSWORD=mysecretpass
 POSTGRES_USER=postgresuser
 
+# General settings
 DJANGO_ADMIN_URL=
 DJANGO_SETTINGS_MODULE=config.settings.production
 DJANGO_SECRET_KEY=CHANGEME!!!
 DJANGO_ALLOWED_HOSTS=.{{ cookiecutter.domain_name }}
+
+# AWS Settings
 DJANGO_AWS_ACCESS_KEY_ID=
 DJANGO_AWS_SECRET_ACCESS_KEY=
 DJANGO_AWS_STORAGE_BUCKET_NAME=
+
+# Used with email
 DJANGO_MAILGUN_API_KEY=
 DJANGO_SERVER_EMAIL=
+
+# Security! Better to use DNS for this task, but you can use redirect
 DJANGO_SECURE_SSL_REDIRECT=False
+
+# django-allauth
 DJANGO_ACCOUNT_ALLOW_REGISTRATION=True
 {% if cookiecutter.use_sentry_for_error_reporting == 'y' -%}
+# Sentry
 DJANGO_SENTRY_DSN=
 {% endif %}
 {% if cookiecutter.use_opbeat == 'y' -%}