Updated .gitignore config

[freemanjp]

For better IntelliJ Git config.

[codecov]

Codecov Report

Merging #165 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #165   +/-   ##
=========================================
  Coverage     72.66%   72.66%           
  Complexity      136      136           
=========================================
  Files            70       70           
  Lines           589      589           
  Branches        166      166           
=========================================
  Hits            428      428           
  Partials        161      161

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