Merge branch 'hotfix/0.1.19'

* hotfix/0.1.19:
  ensure local files are not pushed to production
  fix typo in DS_Store filename
  bump version to 0.1.19
update all grunt packages
Merge branch 'hotfix/0.1.20' into develop

* hotfix/0.1.20:
  update all grunt packages
Merge branch 'develop' of github.com:fixate/generator-fixate-pw into develop

* 'develop' of github.com:fixate/generator-fixate-pw:
  Update README.md