Enable PDS compliance

[raphaelstolt]

Moved churn binary to bin/ and closes, once merged, issue #128.

[bmitch]

Thanks @raphaelstolt ! The Travis build is failing. I think the php churn run in the travis-ci script needs to be updated.

[raphaelstolt]

Fixed. Prolly would be better and DRYer to use the existing Composer scripts also for the Travis CI builds.

[codecov]

Codecov Report

Merging #139 into master will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master     #139   +/-   ##
=========================================
  Coverage     67.76%   67.76%           
  Complexity      105      105           
=========================================
  Files            11       11           
  Lines           363      363           
=========================================
  Hits            246      246           
  Misses          117      117

Impacted Files	Coverage Δ	Complexity Δ
src/Factories/ProcessFactory.php	100% <100%> (ø)	3 <0> (ø)	⬇️

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