run as an organization

[maximousblk]

You can now add profile READMEs to orgs.

Is it possible to run markscribe as an org?

if not, I propose the following changes

add a -scope <username> flag and check if the account is user or org at the start

changes in outputs:

function	user scope	org scope
recentContributions	contribution by user to any repo	contribution to org repos by any user
recentPullRequests	pull requests by user to any repo	pull request to org repos by any user
recentRepos	new repos created by user under any scope	new repos created in org by any user
recentReleases	releases user contributed to in any repo	new releases across org repos by any user

note that user excludes bot users