Update to correctly support -r argument

[chr1shung]

Fixes #477
Fixes #217

Signed-off-by: Chris Hung chris@iotechsys.com

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What kind of change does this PR introduce?

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[codecov-io]

Codecov Report

Merging #478 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #478   +/-   ##
=======================================
  Coverage   55.63%   55.63%           
=======================================
  Files          24       24           
  Lines        2421     2421           
=======================================
  Hits         1347     1347           
  Misses        974      974           
  Partials      100      100           

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[lenny-goodell]

LGTM