Update README.md

Author: vertical-blank

README.md

@@ -6,7 +6,9 @@
 
 Java port of great SQL formatter https://github.com/zeroturnaround/sql-formatter.
 
-Written with only Java Standard Library, without dependent library.
+Written with only Java Standard Library, without dependencies.
+
+[Demo](http://www.vertical-blank.com/sql-formatter/)
 
 ## Usage