INSTALL.TXT:
- change tar command to postfixadmin-$version.tar.gz (instead of 2.2)
- recommend usage of config.local.php (including a basic example how it looks)


git-svn-id: svn://svn.code.sf.net/p/postfixadmin/code@1680 a1433add-5e2c-0410-b055-b7f2511e0802