More notes to README

Add an example for using a response file with 'ibm_impkg' and notes
about package versions.

Author: joshbeard

README.md

@@ -89,6 +89,15 @@ ibm_impkg { 'com.ibm.websphere.NDTRIAL.v85':
 }
 ```
 
+Example of using the included `ibm_impkg` type with a custom response file.
+
+```puppet
+ibm_impkg { 'com.ibm.websphere.NDTRIAL.v85':
+  ensure   => 'present',
+  response => '/mnt/resources/was_response_file.xml',
+}
+```
+
 ## Reference
 
 ### Class: ibm_installation_manager
@@ -138,6 +147,11 @@ software with IBM Installation Manager.  By default, this includes an `imcl`
 provider, which uses the Installation Manager's `imcl` command-line tool to
 handle installation.
 
+The resource does not currently handle upgrading packages in the traditional
+sense.  Basically, the provider will make sure that the specified version _or
+greater_ is installed.  This is partly due to the nature of how IBM software
+is deployed (by a downloaded/extracted archive).
+
 #### Parameters
 
 ##### ensure