typo in readme
fix case when packages_cache is empty
root.user_create: fix assert checking user is in group
Merge pull request #4 from julienaubert/feature/fix_issue_when_empty_packages_cache

fix case when packages_cache is empty
Merge pull request #3 from julienaubert/feature/fix_assert_user_is_in_group

root.user_create: fix assert checking user is in group
Merge pull request #2 from julienaubert/feature/tidy

typo in readme