feat: use git init.defaultBranch if set and present (#61)
feat: use git init.defaultBranch if set and present (#61)

* feat: use git init.defaultBranch if set
* fix: check for existence of defaultBranch

Co-authored-by: Tjebbe Vlieg <747a6ceeadaa836cb4967fa8c483342a0ff2eeb2@bol.com>
jhillyerd/plugin-git