DERBY-3684: Adjust the vti demo's README file to indicate that this code is now built as part of the standard Derby build.
DERBY-3684: Adjust the vti demo's README file to indicate that this code is now built as part of the standard Derby build.

git-svn-id: 2c06e9c5008124d912b69f0b82df29d4867c0ce2@658806 13f79535-47bb-0310-9956-ffa450edef68

apache/derby,trejkaz/derby,apache/derby,apache/derby,trejkaz/derby,apache/derby,trejkaz/derby