tommcfarlin/WordPress-Plugin-Boilerplate — pull request #180 by andrejcremoznik (2014-04-25 11:51:14+00:00)
Title: Fix wrong path for loading text domain

The path returned before was `plugins/languages (as in .../wp-content/plugins/languages)` which is obviously wrong. I did have the plugin folder symlinked in `wp-content/plugins/` though. I tested my change with the plugin folder in place and symlinked and it works now.

https://codex.wordpress.org/Function_Reference/plugin_dir_path