add missing public methods
Merge branch 'hotfix/#750'
Merge branch 'translation/762'
Close #762

* translation/762:
  Corrected typo re https://github.com/zendframework/zf2-documentation/pull/762#discussion_r3405212
  Translated to dutch
Merge branch 'master' of https://github.com/zendframework/zf2-documentation

* 'master' of https://github.com/zendframework/zf2-documentation:
  added return type
  fixed badly grammer
  add missing public methods
  fix typo and fix indentation
Merge branch 'master' of https://github.com/zendframework/zf2-documentation into develop
Merge branch 'develop' of https://github.com/zendframework/zf2-documentation into develop
Merge branch 'fix/zend-form-element-email' of https://github.com/robertbasic/zf2-documentation into hotfix/#753
Merge branch 'develop' of https://github.com/zendframework/zf2-documentation into develop
Merge branch 'hotfix/#753' into develop