Update README.md

README.md

@@ -44,7 +44,7 @@ You can also directly pass POCOs or anonymous objects and use them from JavaScri
 
     var engine = new Engine()
         .SetValue("p", p)
-        .Execute("p.Name === 'Mickey Mouse')
+        .Execute("p.Name === 'Mickey Mouse'")
         ;
 ```
 You can invoke JavaScript function reference