Enhancement: Add examples

[localheinz]

This PR

• adds examples of running composer normalize against composer.json

[codecov]

Codecov Report

Merging #107 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #107   +/-   ##
=========================================
  Coverage     57.73%   57.73%           
  Complexity       35       35           
=========================================
  Files             2        2           
  Lines           168      168           
=========================================
  Hits             97       97           
  Misses           71       71

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