add files for plugin unit testing
show plugin dir, instead of path on success message, since there's more
than one generated file now
transform add_testing_files() method into a proper subcommand
add test-sample.php file
revert to using the official unit testing suite
add manpage for `wp scaffold plugin-tests`
Merge pull request #270 from wp-cli/plugin-tests

Generate all files needed for running plugin unit tests