plugin-boilerplate branch: none of the API stuff works

[aschweigert]

using the plugin boilerplate branch basically none of this works and i'm not sure how to make it work: https://github.com/INN/doubleclick-for-wp/blob/master/docs/Developer-API.md

[aschweigert]

partial fix in https://github.com/INN/doubleclick-for-wp/commit/48ebd3a4fe06623f92e46e56668fc08c1a1059c5

Still needs:

• [ ] backward compatibility
• [x] some way to get a place_ads() function that will actually do the thing
• [ ] updated docs

[benlk]

PR containing this work: https://github.com/INN/doubleclick-for-wp/pull/64