Implement Drupal API docs

[nvaken]

Arguably out of scope for this package I presume, though I'd love to see inline documentation support from https://api.drupal.org/.

[michaelfavia]

Pull requests welcome. I'm using alot of phpstorm for my real editing these days but I still use atom for lighter weight editing and would love to advance the feature set.

[robballou]

FWIW, check out https://atom.io/packages/api-docs, has Drupal, PHP, JS, etc. via http://devdocs.io/

[nvaken]

That's a valuable tip @robballou, thanks! Installed that right away and does take away some of the needs I originally had.

Though, this still does not entirely cover all functionality I would hope to see. Which is support for Drupal's (weird) function naming conventions (hooks, theme hooks, etc...). Eg. I'm not able to search up a hook_ function by putting my cursor on a MODULENAME_preprocess().