Add mins unit to the 'Departs in' column title

[antoniotrkdz]

fix #54

[codecov-io]

Codecov Report

Merging #72 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #72   +/-   ##
=======================================
  Coverage   95.52%   95.52%           
=======================================
  Files           4        4           
  Lines          67       67           
=======================================
  Hits           64       64           
  Misses          3        3

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[jessicasalmon]

wonderful 🍝