README.md in sdbport-0.0.1 vs README.md in sdbport-0.1.0

@@ -1,25 +1,56 @@
 # Sdbport
 
-TODO: Write a gem description
+Sdbport exports & imports data from AWS SimpleDB domains. It can be used as a class or stand alone CLI.
 
 ## Installation
 
-Add this line to your application's Gemfile:
+gem install sdbport
 
-    gem 'sdbport'
+## Usage
 
-And then execute:
+Set your AWS credentials:
 
-    $ bundle
+```
+export AWS_ACCESS_KEY_ID=key
+export AWS_SECRET_ACCESS_KEY=secret
+```
 
-Or install it yourself as:
+Export SimpleDB domain:
 
-    $ gem install sdbport
+```
+sdbport export -a $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n test -o /tmp/test-domain-dump
+```
 
-## Usage
+Import into new domain:
 
-TODO: Write usage instructions here
+```
+sdbport import -a $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n new-domain -i /tmp/test-domain-dump
+```
+
+Purge new domain:
+
+```
+sdbport purge -a $AWS_ACCESS_KEY_ID -s $AWS_SECRET_ACCESS_KEY -r us-west-1 -n new-domain
+```
+
+To list CLI subcommands:
+
+```
+sdbport -h
+```
+
+For details help on specific subcommand:
+
+```
+sdbport export -h
+```
+
+## Known Limitations
+
+* Only performs a single query for exports, which gives it a maxmimum of 1,000 entries.
+* Single serialiazed process.
+* Only supports importing into empty domain.
 
 ## Contributing
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)