#14: Add real usage example

[skamieniarz]

Adding a real usage example to README.md file (requested in #14).

[codecov-io]

Codecov Report

Merging #15 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #15   +/-   ##
=======================================
  Coverage   75.92%   75.92%           
=======================================
  Files           5        5           
  Lines         324      324           
=======================================
  Hits          246      246           
  Misses         78       78

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[coveralls]

Coverage remained the same at 75.926% when pulling 2d297cd on skamieniarz:feat/#14/real-usage-example into f7c91eb on Fitblip:master.

[coveralls]

Coverage remained the same at 75.926% when pulling 2d297cd on skamieniarz:feat/#14/real-usage-example into f7c91eb on Fitblip:master.

[coveralls]

Coverage remained the same at 75.926% when pulling 2d297cd on skamieniarz:feat/#14/real-usage-example into f7c91eb on Fitblip:master.

[coveralls]

Coverage remained the same at 75.926% when pulling 2d297cd on skamieniarz:feat/#14/real-usage-example into f7c91eb on Fitblip:master.