Minor documentation updates

DESIGN.md

@@ -37,6 +37,4 @@ domains/
     config/
       key: []byte(...)
       cert: []byte(...)
-    
-
 ```

README.md

@@ -87,23 +87,34 @@ purpose system.
 ### Initialize a new database
 
 ```
-crockery init -domain example.com
+crockery init \
+  --domain <domain-name> \
+  --cert <cert-file> \
+  --key <key-file> \
+  --postmaster-password <password>
 ```
 
-You'll be prompted to enter a password for the `postmaster@example.com` master
-account, or you can provide on the command line: `-adminPassword x`, or in an
-environment variable: `CROCKERY_PASSWORD=x`.
+You can also provide the postmaster password in an environment variable:
 
-You can provide a custom database name with `-db <filename>`
+```
+CROCKERY_POSTMASTER_PASSWORD="<password>" crockery init --domain <domain-name> ---cert <cert-file> --key <key-file>
+```
+
+You can provide a custom database name with `--db <filename>`:
+
+```
+crockery --db foo.db init --domain <domain-name> ---cert <cert-file> --key <key-file>
+```
 
 ### Run the server
 
 ```
-./crockery
+./crockery run
 ```
 
-Again, you can use `-db <filename>` if the default of `./crockery.db` doesn't
-suit.
+Again, you can use `--db <filename>` if the default of `./crockery.db` doesn't
+suit. Crockery will load the configuration from the database and begin serving
+mail based on it. Received emails are also stored in the same file.
 
 ### Configuration