Search for roles in the roles subdir first.  Throw an error when no role .yml files are found.
Changed atomic_replace to atomic_move, now ti DOES move atomically in the last
step
Signed-off-by: Brian Coca <briancoca+dev@gmail.com>
Merge branch 'roles_dir_search_order' of git://github.com/mcodd/ansible into devel
Cows don't need to display brackets around strings.