bump redisearch release to 2.0.2 - issue #26

Author: tgrall

docs/002-install-redisearch.md

@@ -15,7 +15,7 @@ Let's use Docker for now.
 ```
 > docker run -it --rm --name redis-search-2 \
    -p 6379:6379 \
-   redislabs/redisearch:2.0.0
+   redislabs/redisearch:2.0.2
 ```
 
 *Note: The container will automatically be removed when it exits (`--rm` parameter).*