…ction, and write a test for that that iterates over the known valid GMT offsets from WordPress's database.

This is for #52

… the boilerplate from the 'wp scaffold plugin' command, without removing existing bootstrap.php functionality.

…ld plugin'

…story_publish_meta_box

Fixes the error seen in https://travis-ci.com/npr/nprapi-wordpress/jobs/146555595

1) Test_MetaBoxes::test_nprstory_publish_meta_box
Missing argument 1 for nprstory_publish_meta_box(), called in /tmp/wordpress/src/wp-content/plugins/nprapi-wordpress/tests/test-meta-boxes.php on line 17 and defined
/tmp/wordpress/src/wp-content/plugins/nprapi-wordpress/meta-boxes.php:18
/tmp/wordpress/src/wp-content/plugins/nprapi-wordpress/tests/test-meta-boxes.php:17

…prstory_get_datetimezone_all

The error message:

2) Test_PushStory::test_nprstory_get_datetimezone_all
Use of undefined constant DateTimeZone - assumed 'DateTimeZone'
/tmp/wordpress/src/wp-content/plugins/nprapi-wordpress/tests/test-push_story.php:163

Must pass the class.

this does not fix anything, but it does make the code in this file more readable, which helped with debugging the tests that were broken in #53 and that were fixed by commits 7db701d 2c74c8b