Update README.md

Author: jlmorton

README.md

@@ -5,6 +5,8 @@ The Tableau Extract API is not thread-safe when inserting a row to the extract,
 
 Included in the utility is a thin wrapper to publish an extract to Tableau.
 
+The latest version is 1.0, which is [available here](https://github.com/jlmorton/tableau/releases/download/1.0/tableau-sdk-wrapper-1.0.zip).
+
 # Performance
 On my small dual core Macbook Pro, I see the following performance:
 ```