Updated the editor pod to 0.1.6
Merge branch 'release/4.2' of github.com:wordpress-mobile/WordPress-iOS into issue/editor-missing-placholder

* 'release/4.2' of github.com:wordpress-mobile/WordPress-iOS:
  Removed all open sans fonts from WPiOS project.
  Now using WPFontManager across the app
  EditPostViewController now using WPFontManager
Merge pull request #2058 from wordpress-mobile/issue/editor-missing-placholder

Fix for missing placeholder text in editor body