Update README.md (#47)

Author: spinscale

README.md

@@ -142,7 +142,7 @@ type ConnectionOptions = {
 
 <a id="enginename"></a>
 #### engineName
-You can pass `engineName: "system"` to use system engine, which is always on and execute AQL queries on it.
+You can pass `engineName: "system"` to use system engine, which is always on.
 If `engineName` or `engineEndpoint` was not passed sdk will fallback to default engine endpoint for database.
 
 <a id="accesstoken"></a>