docs: use .dev consistently in README (#74)

Author: holtgrewe

README.md

@@ -34,23 +34,23 @@ git clone [email protected]:varfish-org/varfish-docker-compose-ng.git
 
 From here on, the commands should be executed from within this repository (`cd varfish-docker-compose-ng`).
 
-We will use the directory `.prod` within the checkout for storing data and secrets.
+We will use the directory `.dev` within the checkout for storing data and secrets.
 In a production deployment, these directories should live outside of the checkout, of course.
 
 Now, we create the directories for data storage.
 
 ```bash session
-mkdir -p .prod/volumes/{minio,varfish-static}/data
+mkdir -p .dev/volumes/{minio,varfish-static}/data
 ```
 
 Next, we setup some "secrets" for the passwords.
 
 ```bash session
-mkdir -p .prod/secrets
-echo password >.prod/secrets/db-password
-echo postgresql://varfish:password@postgres/varfish >.prod/secrets/db-url
-echo minio-root-password >.prod/secrets/minio-root-password
-echo minio-varfish-password >.prod/secrets/minio-varfish-password
+mkdir -p .dev/secrets
+echo password >.dev/secrets/db-password
+echo postgresql://varfish:password@postgres/varfish >.dev/secrets/db-url
+echo minio-root-password >.dev/secrets/minio-root-password
+echo minio-varfish-password >.dev/secrets/minio-varfish-password
 ```
 
 Also, setup a secret for the web server sessions:
@@ -59,7 +59,7 @@ Also, setup a secret for the web server sessions:
 # ensure that pwgen is installed first
 pwgen
 # generate a 100 character secret
-pwgen 100 1 >.prod/secrets/varfish-server-django-secret-key
+pwgen 100 1 >.dev/secrets/varfish-server-django-secret-key
 ```
 
 We now copy the `env.tpl` file to the default location for the environment `.env`.