README.md in sdbport-0.3.0 vs README.md in sdbport-0.4.0

@@ -4,11 +4,13 @@
 
 Sdbport exports & imports data from AWS SimpleDB domains. It can be used as a class or stand alone CLI.
 
 ## Installation
 
+```
 gem install sdbport
+```
 
 ## Getting Started
 
 Set your AWS credentials:
 
@@ -18,16 +20,23 @@
 ```
 
 Export SimpleDB domain from us-west-1:
 
 ```
-sdbport export -a $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n data -o /tmp/test-domain-dump
+sdbport export -k $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n data -o /tmp/test-domain-dump
 ```
 
+To export larger SimpleDB domains, add -w.  This writes each chunk to file as it is received rather than storing in memory:
+
+```
+sdbport export -k $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n data -o /tmp/test-domain-dump -w
+```
+
 Import into domain in us-east-1
 
 ```
-sdbport import -a $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n data -i /tmp/test-domain-dump
+sdbport import -k $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n data -i /tmp/test-domain-dump
+```
 
 ## Exporting and importing from multiple accounts.
 
 You can specify your credentials on the command line, however it is best to add them to a configuration file.