Lokaltog/powerline — pull request #882 by Determinant (2014-05-26 05:25:38+00:00)
Title: fixed: checking battery status only examines 'BAT0'

In some linux distributions, the battery status may be presented in the file BAT1 instead of BAT0. Also, according to `battery.sh` in the old project "tmux-poweline", the same situation was considered.