README.md in zonesync-0.2.0 vs README.md in zonesync-0.3.0

@@ -70,9 +70,20 @@
 aws_secret_access_key: <AWS_SECRET_ACCESS_KEY>
 ```
 
 ### Usage
 
+#### CLI
+
+```
+$ bundle exec zonesync
+```
+```
+$ bundle exec zonesync --dry-run # log to STDOUT but don't actually perform the sync
+```
+
+#### Ruby
+
 Assuming your zone file lives in `hostfile.txt` and your DNS provider credentials are configured in `provider.yml`:
 
 ```ruby
 require 'zonesync'
 Zonesync.call(zonefile: 'hostfile.txt', credentials: YAML.load('provider.yml'))