Adding service naming best practices
Adding small addendum about collisions in service names
Merge branch 'feature/service-names-best-practices' of https://github.com/Ocramius/zf2-documentation into feature/692

* 'feature/service-names-best-practices' of https://github.com/Ocramius/zf2-documentation:
  Adding small addendum about collisions in service names
  Adding service naming best practices
Typo fix causing formatting problem
Merge branch 'feature/service-names-best-practices' of https://github.com/Ocramius/zf2-documentation into feature/692

* 'feature/service-names-best-practices' of https://github.com/Ocramius/zf2-documentation:
  Typo fix causing formatting problem
Merge branch 'feature/692'
Close #692

* feature/692:
  Typo fix causing formatting problem
  Adding small addendum about collisions in service names
  Adding service naming best practices