updated short readme

crate/README-short.txt

@@ -1 +1 @@
-Crate is a shared nothing, fully searchable, SQL database with the NoSQL goodies.
+Crate is an open source, highly scalable, shared-nothing distributed SQL database.

crate/content.md

@@ -39,7 +39,7 @@ To start the Crate cluster in containers distributed to three hosts without mult
           -Des.discovery.zen.minimum_master_nodes=2
 ```
 
-# The crate/crate Docker Image
+# The crate Docker Image
 
 To form a cluster from scratch, start a few instances of the Crate container as a background daemon: