atom/atom — pull request #2261 by pritambaral (2014-05-16 11:06:35+00:00)
Title: Move to ~/.atom to XDG directories on Linux

From feedesktop.org:

$XDG_CONFIG_HOME defines the base directory relative to which user specific configuration files should be stored. If $XDG_CONFIG_HOME is either not set or empty, a default equal to $HOME/.config should be used.

Source: http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html