Update README.rst

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[codecov-io]

Codecov Report

Merging #170 into develop will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #170   +/-   ##
========================================
  Coverage    97.31%   97.31%           
========================================
  Files            3        3           
  Lines          372      372           
  Branches        33       33           
========================================
  Hits           362      362           
  Misses           6        6           
  Partials         4        4

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