DERBY-4593: Small change to the maven README file to punch up the necessity of stating your gpg passphrase on the command line when you deploy the artifacts.
DERBY-4593: Small change to the maven README file to punch up the necessity of stating your gpg passphrase on the command line when you deploy the artifacts.

git-svn-id: 2c06e9c5008124d912b69f0b82df29d4867c0ce2@945802 13f79535-47bb-0310-9956-ffa450edef68

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