Update README.md

[TomPed]

Any more caveats? Do these reports expire?

[codecov]

Codecov Report

Merging #6 into master will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff          @@
##           master    #6   +/-   ##
====================================
  Coverage      50%   50%           
====================================
  Files           1     1           
  Lines           4     4           
  Branches        1     1           
====================================
  Hits            2     2           
  Misses          1     1           
  Partials        1     1

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