Add `enabled` and `disabled` commands.

Both of these are just aliases for the `list ( enabled | disabled )`
commands, providing a shorter way to access the same functionality.

Readme.md

@@ -21,7 +21,9 @@ To install with homebrew, use the following command:
       hosts list [enabled | disabled | <search string>]
       hosts show ( <ip> | <hostname> | <search string> )
       hosts disable ( <ip> | <hostname> | <search string> )
+      hosts disabled
       hosts enable ( <ip> | <hostname> | <search string> )
+      hosts enabled
       hosts edit
       hosts file
 
@@ -60,11 +62,19 @@ Print entries matching a given IP address, hostname, or search string.
 Disable one or more records based on a given ip address, hostname, or
 search string.
 
+###### `hosts disabled`
+
+List all disabled records. This is an alias for `hosts list disabled`.
+
 ###### `hosts enable ( <ip> | <hostname> | <search string> )`
 
 Enable one or more disabled records based on a given ip address, hostname,
 or search string.
 
+###### `hosts enabled`
+
+List all enabled records. This is an alias for `hosts list enabled`.
+
 ###### `hosts edit`
 
 Open the hosts file (/etc/hosts) file in your editor.

hosts

@@ -621,6 +621,19 @@ disable() {
   fi
 }
 
+# -------------------------------------------------------------------- disabled
+
+desc disabled <<EOM
+Usage:
+  $_me disabled
+
+Description:
+  List all disabled records. This is an alias for \`hosts list disabled\`.
+EOM
+disabled() {
+  $_me list disabled
+}
+
 # ------------------------------------------------------------------------ edit
 
 desc edit <<EOM
@@ -665,6 +678,19 @@ enable() {
   fi
 }
 
+# --------------------------------------------------------------------- enabled
+
+desc enabled <<EOM
+Usage:
+  $_me enabled
+
+Description:
+  List all enabled records. This is an alias for \`hosts list enabled\`.
+EOM
+enabled() {
+  $_me list enabled
+}
+
 # ------------------------------------------------------------------------ file
 
 desc file <<EOM