Updating help for schema shell. Clarifying use of schema dump. Reformatting help for other commands.  Closes #5407
Updating help for schema shell. Clarifying use of schema dump.
Reformatting help for other commands.  Closes #5407

git-svn-id: d6601dcf5e7dd084c06453dcde34b6bc00f2d257@7661 3807eeeb-6ff5-0310-8944-8be069107fe0

marciotrindade/cake_on_rails,marciotrindade/cake_on_rails