fix users who have PRs but have no company
Merge pull request #11 from jackfengibm/fix_users_without_company

fix users who have PRs but have no company
added conversion step for users who had PRs but not affiliated with any company
Merge pull request #12 from jackfengibm/added_conversion_step_for_users_with_PR_but_no_company

added conversion step for users who had PRs but not affiliated with any ...