Add some boilerplate.

Signed-off-by: Xiong Changnian <xiong@cpan.org>
Make 'hello.pl' executable.

Signed-off-by: Xiong Changnian <xiong@cpan.org>
Merge branch 'feature-boilerplate' into devel

* 'hello.pl' tests for git agility

Signed-off-by: Xiong Changnian <xiong@cpan.org>