bugfix annotation and serializer service argument definition

[Tetragramat]

bugfix annotation and serializer service argument definition php-cache/issues#45

[codecov-io]

Current coverage is 21.81%

Merging #52 into master will not affect coverage as of 4cb2372

@@            master     #52   diff @@
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  Files           18      18       
  Stmts          715     715       
  Branches         0       0       
  Methods         83      83       
======================================
  Hit            156     156       
  Partial          0       0       
  Missed         559     559       

Review entire Coverage Diff as of 4cb2372

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[Nyholm]

Awesome. Thank you!