file list

.
./modules
./modules/foo
./modules/foo/files
./modules/foo/files/hello
./modules/foo/manifests
./modules/foo/manifests/init.pp
./manifests
./manifests/site.pp

hello

Hello world

init.pp

class foo {
  file {
    "/tmp/hello":
      ensure => file,
      source => "puppet:///modules/foo/hello";
  }
}

running it

snack(/tmp/z) % puppet apply --modulepath modules manifests/site.pp 
notice: /Stage[main]/Foo/File[/tmp/hello]/ensure: defined content as '{md5}f0ef7081e1539ac00ef5b761b4fb01b3'

site.pp

include foo