fixes issue #49
Merge pull request #50 from SwedishPensionsAgency/issue-#49

fixes issue #49
Update README.md
Update to-char.r
Update to-char.r
Merge branch 'master' into dev

* master:
  Update to-char.r
  Update to-char.r
  Update README.md
  fixes issue #49
[#87] Change default path, getwd() -> tempfile()